Okay so this seems to come up frequently in other threads so I thought we'd just make a thread dedicated to it. The driving force behind it (ha - no pun inteded) is usually Something Awesome's GF - she likes to slap or whack his balls during sex. They both get off on it. She's said she likes the feeling of degrading him by doing it (and I strongly suspect she likes the power and sense of ownership that goes along with it), and in large part SumSum likes to be mistreated by her, even to the point of being hit in his balls resulting in pain and discomfort.

Like most sexual things, if I hear of something I haven't tried I want to experiment with it right away, so I tried squeezing my BF's balls the other day but I squeezed too hard and it took him out of thegame early. Then a few days later after he recovered completely I tried slapping them, but this time I went too easy on them and it had little effect. (These really were gentle strikes I realize now - guess I was a little gunshy.) So I realized I had to actually own this and not go from a playbook (SumSum actually suggested that from the get-go, more or less), so I came up with a plan that suited me best, at least as an intro to the whole thing - I'd squeeze them for an extended period of time. I then worked in some rules, such as no hands allowed on his part, taunting on my part, challenges to do or not do whatever thing seemed least likely for him to pull off, begging, rewards, punishment, etc.

What I ended up doing last night was this, and it worked out amazingly well ....I got BF in a 69 position with him on his back underneath me, his package in front of me and at my disposal, and my stuff in his face. I was on top with my body weight resting on him so there was also the sensation of me 'queening' him in a way, tho I wasn't sitting on his face, but he felt under pressure and at a disadvantage physically, and submissive. I took hold of his balls by holding his penis out of the way with one hand and grasping the balls from underneath. (He has good sized balls - not as big as mine lol - but I can still cup them both in my hand comfortably and squeeze. So I did this and squeezed lightly but enough to hurt (he squirmed a little), then challenged him not to eat anything I had in his face, and threatened that if he did, he'd get squeezed tighter. He can't stop himself from eating me up under basically any circumstances, so this was a losing battle on his part from the get-go, but it was made more erotic by the fact that he was causing himself more and more pain by servicing me, because each time I challenged him not to eat and he failed, I would indeed squeeze a little tighter. In fact I never actually stopped squeezing during the whole time this played out, so by the end he was in pretty serious discomfort, truth be told. It was great because he was causing it himself and was powerless to stop himself, which just made it more 'wrong,' and increasingly so as the pressure increased and he lost more and more control. I also didn't allow him to touch me with his hands while this was going on (he loves to caress my thighs and skin wherever he can get his hands on it normally), so that added to the feeling of powerlessness. The penalty for touching me was that we'd quit, so he knows what's best for him and didn't want that at all so no hands it was.

The final challenge was that if he couldn't stop himself from cumming, I'd punch his balls. He failed that too and ended up cumming with no penis stimulation whatsoever, at which point I did indeedpunch him in his balls pretty hard, tho it was coming outward in which is not a very strong hit (but it doesn't need to be strong lol). He actually did get 'hurt' by that and folded up like he'd really taken a pretty good shot, but it worked great because it was at or after the culmination and he was free to go nurse his balls without needing them for anymore performance at that point. 

To finish it off I made him clean up the cum he got on me when he shot off (missed me partly but did catch my cheek and hair with a couple pulses) - Romy style I'm talking about here - and then I sent him on his way. It was in a word amazing. 

He owes me big time now because we don't often focus on his pleasure like that (but what the heck, he's been good), so he's got some serious time to put in on the next few occasions in whatever way I decide.

Anyway, just thought I'd share! I love this stuff lol.