The Aliens Experiment With Us

"Grace, are you awake?" I asked quietly. I just woke up on the alien ship, still restrained to a bed. I could see Grace next to me, naked and restrained.

"I'm awake, I'm scared to make a noise."

"I don't think they're back yet."

I looked across the room, and fuck, there they were. The dark forms from across the room advanced slowly.

"Hello, humans. We have a few more questions to ask, now that we've studied your reactions from our first experiments."

Grace and I kept quiet, we didn't want to help them experiment with us. As they approached, a tentacle appeared between my legs. It went straight for my balls. I engulfed them and gently squeezed.

"We noticed that your testicles are quite sensitive, and yet you respond positively to stimulus." The tentacle squeezed them, and my cock quickly became erect.

"Does it feel good when we apply pressure there?"

"To a point," I winced as the tentacle squeezed my balls flat."But then it hurts like hell," I winced.

"Yes, I see that." The tentacle sucked them in and gently kneaded them. "That stimulus feels good, correct?"

"Yes ... very."

"I'm surprised at how exposed your testicles are; usually, species evolve to protect their genitilia."

The tentacle let my testicles drop, it moved to my cock. The tentacle opened and took just the head of my cock in. It felt like it was licking the head of my cock. "We noticed that the tip of your penis responds strongly to stimulus."

"Yes," I moaned. Fuck it felt so good.

I looked over to see the other alien approach Grace, and a tentacle appeared between her legs. The restraints held her legs wide apart. The tentacle had a mouth, similar to the one that was sucking on the head of my cock. The tentacle lowered onto her pussy lips, and it ran along her clit. Grace moaned quietly, unable to suppress her reaction.

"And what is this? The small protrusion above your vagina hole?"

"That's ... my ... clitoris." Grace barely managed to get the words out, the tentacles were driving her crazy as they slipped and slid along her pussy. Another tentacle appeared between her legs, and it pushed into her while the first continued licking her clit.

"OHHHH FUCK!" Grace moaned louder as her face turned red. "OOOOH FUCK YES!" Grace's entire body convulsed as she began to orgasm. She squealed as the tentacles relentlessly stimulated her clit and pussy. "FUCK YES!" She panted for breath, her entire body seemed to squirm in delight as she came.

The tentacle on my cock surprised me by suddenly sucking in my entire cock. It took me deep, tightened around my cock, and pulsed as it sucked me. Between that and watching Grace orgasm, I quickly began shooting cum into the tentacle.

"OOOOH FUCK!" I cried out as my cock throbbed. The tentacle sucked hard on me, getting all the cum from my balls. I knew my output was being measured, but I didn't care, this was one amazing orgasm. It sucked and sucked until there was nothing left.

I looked over to see Grace beginning to orgasm again. The stimulation was too much for her, she couldn't stop from orgasming. "OHHHH YES!" she cried out as she began squirming and moaning again. At the same time, the tentacle on my cock was becoming too much for me.

"Stop," I begged. "Please stop. Stop sucking me." The overstimulation was making me insane, I was nearly crying. I squirmed in my restraints,

"Why? The female subject is orgasming again, can't you?"

"No! I can't."

"Why not?"

"Males can't! Please stop!" Tears rolled down my cheeks as I begged. The tentacle finally let my cock drop from its grasp. The tentacles withdrew from Grace too, the dark forms moved back some.

"Just so we understand, the males can only orgasm once, and they have these exposed genitilia which are overly sensitive. Clearly, the females are the dominant species on your planet."

"Yes, we are," Grace said.

They really are, I thought about that as I felt suddenly drowsy and exhausted. I'm not sure how they were doing it, but between experiments, the aliens put us to sleep. I yawned as the lights went out.