OK, so I tried to come up with something based on the posts so far. This is a very long post. Sorry about that.
The game still needs some work but here's how the session with my girlfriend went. She was definitely down for the idea of a ball busting dice game.
Here's the game I proposed to her:
We trade turns rolling a die. The various rolls have these meanings:
1 - squeeze one ball as hard as you can
2 - squeeze both balls in fist as hard as you can
3 - her choice (could be something nice or any ball busting thing she wants)
4 -6 - I remove one article of her clothing (and I start naked)
If it's a 1 - 3 you roll again to see how many seconds for squeeze, or how many times if it's a #3 and she opts for punches, slaps, kicks, etc.
The session went like this:
(She is starting with 4 items of clothing -- shirt, bra, shorts, panties -- and I'm naked.)
Her: No, I don't like those odds.
Me: But it's 50/50 - there are 3 good things and 3 bad things
Her: Nope. Your goal is to get me naked and my goal is to beat the shit out of your balls, but I want to change the list
Me: OK, what should they be?
Her: Well, I'm really good at rolling sixes, and I really like punching them, so I want punching on the list, but it shouldn't be 6...
Her: List should be:
1 - punch
2 - squeeze both in fist
3 - girl's choice
4 - slap
5 - remove item of clothing, guy's choice if she's already naked
6 - squeeze one ball
Me: OK, I'm game - who goes first?
Her: We roll to see who goes first, high roll goes first
(I get high roll, I go first)
(I roll a 4 - slap)
(I roll again to see how many slaps and roll a 5)
(She does 5 half-hearted slaps)
Her: that wasn't too bad was it?
Me: No, but you should be trying harder. This is a competition of sorts.
(Her turn to roll, she rolls a 1 - punch)
(She rolls again and rolls a 3)
Her: Hold your dick out of the way so I have a clear shot
(She gives 3 punches that don't hurt - I'm standing and it's hard to punch balls from the front when standing - mine anyway because they always pull up tight)
(My turn to roll, I roll a 6)
Me: Rather than roll for # of seconds, I want you to squeeze it as hard as you can - so I can see how long I can last.
(She manages to get lefty down far enough to squeeze it and starts squeezing - I can't even feel it)
Me: Harder
Her: I'm scared
Me: As hard as you can
(She really starts bearing down and eventually I feel it and eventually it hurts enough for me to give)
(Her turn to roll, she rolls a 5)
Me: OK, I get to choose an item of clothing.
Her: I don't like this game. It doesn't make sense that I roll and I have to take off an item of clothing.
Her: I like the concept of the game, but we need to work on it.
Her: I don't like the second roll for the # of slaps or # of seconds, because I would just do it once.
Her: If it's a punch or a slap or a squeeze I'd just do it one good time.
Me: So we need to come up with one list that are the meanings when I roll and one list that are the meanings when you roll?
Her: Yeah, that might work.
Her: But for now go ahead and strip me because I know you like taking 'em off and I need dick
So I strip her and we have a really nice fuck session. She cums easily (as she always does). Once her pussy is relaxed and wet I have a bit of a hard time cumming (as I often do) and she reaches down, grabs lefty and starts squeezing (because she knows this makes me cum). But since she previously gave lefty a full-force squeeze during the game he's a little sore - so even a playful squeeze just to make me cum hurts a little more than is optimal. But I still cum so mission accomplished. Lol.
So I'm trying to think how to refine the game to make her happy and want to play. I really want it to bring out her competitive side so she'll actually fucking try a little harder. When we did nips vs. balls she squeezed good because she's trying to get me to give before she does. That was fun.
I think that if we don't have the second roll and she is only going to do one slap or one punch or one squeeze, or whatever, then that's not going to be very sexy/intense for me because I really want her to want to hurt 'em. I don't actually want the pain, I want to see her determination to inflict it - if that makes any sense.
One thing that I was thinking is let's say she rolls for squeeze. Maybe it's not just squeeze - it's "squeeze 5 seconds". And her goal is to get me to give in before 5 seconds is up. And if I give in before the 5 seconds is up then she gets to roll again instead of it being my turn. But if I can make it through the 5 seconds then it's my turn. That would give her incentive to try. Because if she does a good job and I keep giving in then it will never be my turn and eventually I'll be so sore I'll just forfeit.
But I think I need help refining what the rolls mean. I agree with her that we should both alternate rolling, but my rolls should mean different things than hers.
So for her rolls maybe (remember, she doesn't want to roll a second time for quantity):
1 - 5 punches
2 - squeeze both in fist, 5 seconds
3 - her choice
4 - 5 slaps
5 - 5 kicks
6 - squeeze one ball, 5 seconds
My list (remember, she may still be clothed, and I'm naked, so the things I can do to her might be limited):
1 - remove one item of clothing
2 - 1 minute blowjob
3 - 1 minute of sexy threat talk ("I'm gonna take your balls...", whatever)
4 - ?
5 - ?
6 - ?
I don't know - I need some help. Let me know your thoughts and suggestions.
Thanks!