I think a lot of guys hesitate to ask their girlfriend to participate because it seems selfish to ask a girl to inflict mental and physical pain on you IF she’s not receiving some simultaneous gratification.
As I was getting busted before, I’ve thought “What’s in this for her?”
Every guy on this board will admit to thinking “I want my balls slapped around by that girl.” Do females think “I’d like to get his balls in my grip!”
I can think of several answers that would seem obvious, but I’d like to hear what a few females on this site have to say about what they get from teasing and pleasing a guy by administering pain to his balls.