I think so...
Again to my ex-wife, we had an occasion where she was pissed at me for having had a wank behind her back. I wasn't ready for sex on demand, but she got rough - the idea being that it would get me up for her... it was working, but not as quick as she wanted.
She grabbed my sack and twisted it in her hands, with the balls squeezed out side of her closed grasp. She laid down one of the hardest punches (while grabbing and squeezing) and knocked me for ten with it.
Instead of my usual smile and agreement through body language, I simply groaned, grimaced and rolled over in pain.
"Ahhh yes!" were the only words from her mouth. At that, she let go.
I'd have happily let her continue, but I wasn't ready for it when it came. I'm guessing my punishment was a considerably harder punch than normal, somewhat malicious intentions instead of the usual foreplay intentions she had, and the fact that once I was hard and ready (due to this agonizing punch from her) she promptly rolled over and left me blue-swollen-balls for the night.