My SIL kicked me in the balls yesterday.

A bit of back story, my wife knows about my ballbusting fetish, in fact, she loves busting my balls. Humiliation on my part is a big turn on for both of us. My wife’s older sister was quite the ball buster growing up, I’ve never seen her kick a guy but have heard all of the stories from my wife. Once my wife even told her about a time she kicked me in front of me, which was really embarrassing but also a huge turn on to have my SIL laugh at hearing about me getting my balls rocked by her little sister.

Anyways, yesterday the college they both attended had a match for the women’s soccer team against their rival school. I’m always teasing both of them so I was rooting for the opposing team during the first half of the game. The points were tied and my SIL, being a good sport, proposed we make a bet on which team will win. When I asked her what she wanted to bet my wife cut in and said “if our team wins, Shelby (SIL) gets to kick you in the balls, if they lose I’ll do anything you want in bed tonight.

Before I could respond Shelby said deal and beamed at me with a smile. It took me a few seconds but I said deal as well before turning to look at my wife who had the biggest shit eating grin on her face, she’s knows I think her sister is hot, and knows I’d love a kick in the balls from her. Their team really started to pull ahead in the second half of the game. With a few minutes left my wife whispered in my ear “you better flip your hard on up into your waist band, and get ready, she can kick hard”. A few minutes later, their team of course won.

Both ladies looked at me and started laughing. Shelby looked at my wife and asked “are you sure you’re okay with this?” My wife said “he deserves it for rooting against us.” Shelby chuckled and asked where I’d like to stand. I chose the back yard in the grass and we all walked outside. Me standing with my legs slightly spread, hard dick up between my waistband. Shelby in front of my with her hands on her hips. My wife holding her phone up recording.

My face was beet red and I’m sure I looked nervous. Shelby told me “I’m really sorry for this, but a bet is a bet.” The next instant her right foot cocked back a few inches and then her leg flew upwards. She got me right in the underside of my balls with the top of her sneaker, it really was a perfect kick. Definitely not the first time she had done this to a guy. I dropped like a stone into the fetal position.

Later my wife showed me the 10 minute long video. She kicked and I dropped about 30 seconds in. I was coughing and wheezing almost the whole time with both hands clamped between my legs. While both of my legs were twitching involuntarily, with my eyes clamped shut and my face in the grass.

Both women laughing at me and talking about how sensitive our nuts are the whole time. I didn’t hear any of this due to how much pain I was in. After about ten minutes I was able to crawl over to Shelby’s hammock and lay in it still cradling my balls for the next half hour while the ladies went inside still laughing at me.

My wife has been teasing me non stop about her sisters kick since yesterday. She got upset when she asked me who kicks harder and I told her, Shelby, by a long shot.