In The Gym With Lexie

When I was a sophomore in college, I found out about a program at my school through which you could get gym sessions with a personal trainer for free. The trainers were students in the physical education department, and they earned credit through the program. I was in good shape and I had an athletic body, but I didn't have much experience working out in a gym, and I always felt self-conscious when I tried to. I signed up for the program, hoping that I would learn proper technique with the equipment, and then not have to worry that I was unknowingly making an ass out of myself if I want to work out.

I got to the gym a few minutes early for my first session. It was during a weekday, when most people at our relatively small college had class, and the gym was totally empty. I felt a little nervous; I had never had a personal trainer before, and I wasn't sure what to expect.

After I had been waiting for a few minutes, a girl about my own age came into the gym. I felt a little jolt of extra nervous energy run through me; I had really been hoping that the gym would remain empty for the entire session, so that I wouldn't have to potentially look stupid in front of other people-- and I especially didn't want to look stupid in front of a cute girl my own age. I hoped she wasn't planning a long workout and would be gone reasonably soon.

Instead, she walked right up to me. "You must be Colin," she said, smiling at me warmly. "I'm Lexie-- I'm your new trainer."

For a moment I froze-- stupidly, it had not occurred to me that the trainer might be a girl, and I felt like an idiot for being caught off guard by that, in retrospect, very reasonable possibility. At the same time, I was a bit mesmerized by Lexie; she was incredibly cute and had an amazing body, and she was only wearing a sports bra and some tight lycra short-shorts. There was no question that I was enormously attracted to her. For the first time I began to appreciate how potentially strange and awkward it might be to have a personal trainer that was your own age and a fellow student at your school.

"Hi," I said nervously, my voice coming out softer and weaker than usual. "It's nice to meet you."

"Likewise!" Lexie said enthusiastically. "If you're ready, why don't we jump right into it."

We started on the mats in a corner of the gym, with Lexie leading me through a stretching routine. I couldn't believe how flexible she was-- she could move her body in crazy ways, limbs easily bending and twisting in a manner that seemed almost impossible. I felt like a complete novice next to her, although she seemed to be at least mildly impressed with me nonetheless. "Wow, you're doing great Colin!" she said encouragingly. "Most boys aren't nearly as flexible as you-- you're off to a great start!" I had a feeling she was only humoring me, but I couldn't help feeling proud, and I felt my face start to blush slightly.

After about ten minutes, she sprung up off the floor and clapped her hands once. "All right!" she said, with the same chipper note in her voice. "Let's get started on some of the equipment."

I followed her over to a confusing-looking machine. It was a structure several feet taller than me, with metal bars at various heights and a long, thick elastic band attached in a loop to one of the bars. I was surprised we were starting with something that seemed so complicated.

"We're going to begin with some leg work today-- everything in the gym is built up from the legs," Lexie said. "For this one, this elastic band kind of comes over your shoulder like this, and then you're going to step onto it with one foot, and then use the muscles in your upper leg to push your foot all the way down to the floor. Hold it there for about ten seconds and then lift your foot back up and repeat." She stepped into the machine as she was talking and demonstrated how it worked; she made it look effortless, as she seemed to do with all things. "You can hold onto one of the bars to stabilize yourself if that helps. There is a *lot* of tension in this elastic band, so it will provide an enormous amount of resistance when you try to step down. Most people are surprised by how much resistance there is when they first try it."

I nodded and moved forward to take her place, but she stopped me and gave me a curious look. "What are you wearing underneath your gym shorts?" she asked casually.

I felt my heart rate skyrocket-- it was a totally unexpected question, and I was almost too shocked by it to feel as uncomfortable as I should have. "Um," I said uneasily, "just a jock strap."

I thought I saw a subtle flicker of excitement flash into Lexie's eyes. "That's perfect!" she said. "Go ahead and take your shorts off."

"Uh, what?" I said meekly. The situation felt surreal.

"Oh, well, loose gym shorts like that can interfere with the proper motion needed for this exercise," she explained. "It's easiest to just take your shorts off while we're working on this machine."

"Um," I said. I could feel my cheeks blushing hotly. "I guess I'm not sure I'm comfortable with that."

"Relax," Lexie said, with a reassuring smile. "I know it might seem a little strange if you haven't spent much time in the gym, but it's pretty normal. Heck, look at what I'm wearing." She gestured down at her very small shorts, which didn't leave much to the imagination. I had been trying hard not to ogle her the whole time. It seemed like she made a good point.

"Okay," I agreed, although it still made me feel very nervous. I quickly pulled my shorts down, hoping to rip it off like a band-aid, and kicked them over to the side where they'd be out of the way. The jockstrap was a little small for me, and the fabric hugged my genitals tightly in the front. I could see that Lexie was unapologetically eyeing my newly exposed parts with a big smile. I felt very on display.

I faced away from her and got into position in front of the equipment. "Cute butt," she said coquettishly from behind me.

"Um, thanks," I mumbled. I put my foot into the band and tried to step down. Lexie had been right; I couldn't believe how much resistance the elastic had; bringing my foot to the ground was much harder than I had anticipated, and it took all my strength to hold my foot down while the elastic was fully extended-- and then once I released the pressure even a bit, the band shot back up with surprising force, bringing my foot with it. I did a couple of clumsy reps where I wasn't able to hold my foot down against the tension, then regrouped and tried again. I brought the band down with my foot and tried as hard as I could to hold it there, the muscles up and down my whole leg shaking with the effort.

Then I sensed a quick sudden movement behind me, and Lexie, with preternatural speed, kicked my foot out to the side, causing the elastic to slip out from underneath it. In a fraction of a second, the band whistled up between my legs and snapped with punishing force into the pouch of my jockstrap, the thin, tight fabric doing nothing to protect its contents.

"Aahhuughh," I shrieked, and my voice sounded strange to my own ears, like a girl's voice. Much like any guy, I had taken some hits to the crotch before in my life, but never anything like this. I had casually thought that I knew what people meant when they said it hurts to get hit there, but it turns out I hadn't really known until now. My whole body was radiating a debilitating, white-hot pain; it wasn't just uncomfortable, it was truly unbearable, a previously unimagined agony.

Lexie was standing behind me and laughing. With what little brain capacity I could muster, I thought how frustratingly careless she had been-- she must have been kicking my foot to correct my technique, but surely she should have realized that she risked exactly this outcome by doing so. I heard a strange noise and realized belatedly that it was coming from my own mouth, as I groaned miserably.

"Ohhhhh," I moaned. "Ahhhh, ohhhh fuck." My voice was barely more than a hoarse whisper. On top of the incredible pain, I felt extremely embarrassed that this had happened in front of Lexie. She was still standing behind me laughing; somewhere in the back of my consciousness it occurred to me that she had a very cute laugh.

"Oh my goodness," she said, catching her breath through her laughter. "Got you! Boy, I'd sure say that was a direct hit."

Through the distracting pain, it took me a while to process what she meant. "You... you did that on purpose?" I asked uncertainly, my voice still small and weak.

"Yep!" she said brightly. "I pull that prank on every new guy who comes in here. I swear, it never gets old. You should have seen yourself! You collapsed like a sack of potatoes."

I didn't know how to process that; I felt stunned. Until a few minutes ago I could never have imagined that anything could make me feel so awful, and the idea that Lexie would do that to me on purpose was hard to wrap my head around. The fact that she called it a 'prank' felt so minimizing; I guess I could see how giving someone's nuts a light tap could be a prank, but this... this was absolutely merciless. It made me feel extremely helpless to think that she just decided on a whim that it would be funny to make me feel like this, and then laughed about it after she'd done so.

I was slowly beginning to process the events more clearly. "Is that why you had me take my shorts off?" I asked.

"Duh," Lexie said, and I could hear a smile in the tone of her voice. "I wanted to make sure that it snapped right into your balls. When you're wearing loose shorts like that it can absorb some of the impact and soften the blow, and that's no fun."

"Ughhh," I groaned; the worst of the pain was starting to recede, but I still felt awful, both physically and mentally. "Did you really have to do that? That hurt so, so badly."

"Well I guess I didn't *have* to," Lexie said, rolling her eyes slightly. "But I don't see why I shouldn't. It's all in good fun. I like to show my trainees that it's important to have fun in the gym-- you can't be all serious all the time."

It took a little while before I felt okay enough to continue. Lexie had been waiting, not exactly patiently.

"All right, consider that your warm welcome to our trainer-trainee relationship," she said when I was able to stand back up. "Now that we've got that out of our system, are you ready to do some actual reps?"

There didn't seem to be any viable answer other than yes. I got back into position with my foot on the band and tried again to press it down; in my rather dazed state, it didn't occur to me to put my shorts back on. I suppose I took it for granted that Lexie's prank was a one-time ordeal; but as soon as I managed to get the elastic all the way to the floor and hold it there, my leg shaking with the effort, she reached between my legs from behind and tapped my balls with her hand. She didn't hit particularly hard, but the shock of it caused me to jump, and as I did the elastic once again came whooshing up between my legs. This time it made startlingly loud 'SLAP' sound as it snapped into my still-tender scrotum through the ultra thin fabric of the jock strap. I gasped loudly; it was a disorienting one-two punch; I was still wrapping my head around the unexpected shock of Lexie tapping my nads when the elastic band sprung up and got me with truly devastating force.

"Eeeeeeeeee," I cried in a high-pitched whine. I sunk into a miserable squat on the ground, clutching my balls, my whole body trembling with the pain. On top of the agony, I felt both embarrassed and betrayed.

"Oooooo, right in the testicles," Lexie said in mock sympathy, and then laughed. "I bet that hurt, huh? I really don't think there's anything funnier than a guy getting whipped in the sack." She looked down at me like she expected an answer, but even if I had something to say in response, I couldn't possibly have formed words.

"You know Colin, your technique on this machine could really use some work," Lexie went on in a heavily mocking tone. "The elastic band isn't supposed to come flying up into your boy parts; it's supposed to stay under your foot the whole time. Here, do you need me to show you?"

She stepped into the machine and easily worked the band to the floor with her foot, keeping it pressed down firmly without seeming to exert any effort at all. It felt like some kind of mild power play; she had been easily dispatching me to the ground by getting me in the balls, but now she was demonstrating that, even without relying on that inherent advantage, she was still a lot stronger than I was.

I watched her lithe body work the elastic from my agonized crouch on the floor, feeling a confusing cocktail of emotions. Then, in a moment of impulsiveness the motivation of which I don't totally understand, I reached out and grabbed her foot, causing the elastic to slip out from underneath it and fly up between her legs.

The band shot up and snapped into her crotch, and, to my amazement, it made a depression in her spandex shorts such that you could see exactly where it impacted her pussy lips. From this perspective you could really see what a crazy amount of force it delivered, and I almost immediately felt bad about what I had done.

For a brief moment her eyes opened wide in an expression of genuine surprise, and she gave a short, sharp intake of breath; but then she quickly recovered, smiled down at me on the floor (a combination of pain and confusion on my face, I can only imagine) and laughed.

"Silly goose," she said through her laughter. "What were you expecting exactly? That I would crumple to the floor like you did? Sorry, no such luck." She casually removed the band from where it was making an indent in her pussy; she hadn't even flinched. "I suppose that stung a little, but I don't mind; I like it rough." She winked at me and casually, lightly ran her hand over her smooth crotch. "If you were hoping to get back at me and give me a taste of what it feels like to get whacked in the testicles, I'm sorry to disappoint you."

I felt even more miserable than I had before. I hadn't even really meant to snap the elastic into her crotch, I just sort of did it without thinking, and I was now realizing how stupid I looked at a result. At the same time, it seemed almost beyond belief to me that she had stood there and taken such a ruthless shot to the same spot I had, and her only reaction was to laugh about it. The moment the elastic snapped into my balls replayed in my mind, and I shuddered, even as my testes continued to hurt enormously. It seemed incredibly unfair.

I was still squatting on the ground, taking deep breaths with my hands on my knees. Lexie squatted down suggestively right in front of me, looking right into my eyes. "If you want me to know what it feels like," she went on in a sweet voice, "you'll have to describe it to me. Tell me, Colin, what does this feel like?" She brought her hand down to the floor and then shot it up quickly, slapping the pouch of my jockstrap quite hard with her palm.

"Ahh!" I yelped in surprise, and then curled back over my midsection, clutching my nuts and whimpering.

"What's the matter, cat got your tongue?" Lexie teased. "Oh, don't be such a baby. You tried to get me too, remember? It's not my fault that it didn't work. I just returned the favor. It's only fair!"

To me it felt anything but fair, but I was in no position to argue with her. I took a while on the ground to recover, but eventually I was able to gingerly stand back up.

"Okay, as fun as all this is, let's get serious now," Lexie said. "I want to see you do ten reps for real."

"No way, are you crazy?" I said indignantly. "You're just gonna trick me so that I get it in the balls again-- I'm not dumb."

"No, really Colin, I won't," Lexie said, and whether or not it was a trap the earnest look on her face was very convincing. "I mean it. I'll even stand way in the back of the room while you do it, so that I can't possibly interfere. See?" She stepped backwards as she spoke, giving me a reassuring smile.

"All right, fine," I said. I didn't feel thrilled, but it was hard to argue with her. I put my foot back in the elastic and stepped down, but I felt very nervous. It occurred to me that there was a danger of my foot slipping even without any shenanigans from Lexie, and the thought terrified me. Suddenly I was way too in-my-own-head, my whole body shaking with nerves, and, like a self-fulfilling prophecy, the band slipped out from under my foot, shooting up with the startling speed I had become all too familiar with and absolutely obliterating my already-achey testicles.

"Oooooooooooo," I howled, collapsing to the ground. It was complete misery. It seemed like as soon as I was near feeling better from one ultra-hard hit to the balls, a new one kept coming right on its heels. I felt like crying, but the wind had been so knocked out of me that I couldn't.

"Wow, talk about an own-goal," Lexie said, coming back over and towering above me as I writhed in agony on the floor. "I mean, I easily could have scrambled your nuts myself if I had wanted to, but I figured I'd give your babymakers a break for once. So much for that!"

I was barely registering what she said. I shifted out of a fetal position-- searching in vain for any way to arrange my body to relieve the agony-- and got on my hands and knees, reaching back with my hand to cup my balls. Without really thinking about it, I pushed the jockstrap aside so that I could clutch my bare nads in my hand; I stayed like that for a while, but soon it became too tiring to hold myself up with just one hand, so I brought my other hand back to the floor, not quite realizing (my mind being fairly hazed over) that I had left my package out in the open air.

I heard Lexie giggle from behind me. "Whoops," she said, "it looks like someone left his ballsack exposed." She gently tapped her foot into my naked balls to illustrate her point. The sensation was incredibly alarming, sending an ice-cold jolt of adrenaline through my veins; but before I could figure out what to do about it, Lexie, from behind me, reared her foot back and delivered a very hard snap-kick directly into my testicles.

"Oooooughh," I grunted, crumbling back into a puddle of agony on the floor. The feeling of her foot slamming into my balls felt branded onto my consciousness; I couldn't process anything besides an instant replay of that impact over and over. She had kicked shockingly hard.

"She shoots, she scores!" Lexie said in an announcers voice, making herself laugh again. "Boy, if that wasn't a solid kick in the old ball bag, I don't know what is. I think your *kids* are going to feel that one."

She looked down at me silently, as if admiring her handiwork. I was groaning in despair at her feet.

"Was that a little too mean, Colin?" she said, without much remorse in her voice; if anything it sounded more like she was teasing me. "Getting a guy in his boy parts *that* hard might be a bit harsh. It must hurt so much." She started laughing as she thought about it, and again I couldn't help but think, despite everything, how cute her laugh was. "Well maybe it'll teach you to not go around sticking your butt in front of girls with your testicles hanging out, you silly thing. If I was really feeling feisty, I would have kicked them even harder. That's fun to imagine, isn't it?" I groaned into the floor in response. "Well, don't feel bad; it's *supposed* to hurt that much. I guess you can thank me, really-- we've confirmed that you have some nice healthy reproductive organs that work just as they should, thanks to me. Or at least you did; I guess there are no guarantees after that kick!" She laughed again.

For a few moments she looked down at me in silence again. "Well Colin, I'd say that's probably as much as we can realistically hope to get done today, considering your current state and all. So why don't we pick up where we left off next week. Great job today! I'm really excited to be working with you. Take your time getting back up. I'll see you in the locker room afterward." She laughed again at this last part; I wasn't really sure what she meant. She bent down-- so effortlessly, so lithely-- and slapped my butt, quite hard, and then lightly walked out of the gym on the balls of her feet.