I have in occasion enjoyed some really nice bites and other tooth action on my cock. This is usually after extreme excitement from a preceding BBBJ that gets me so hard I can't cum - pretty amazing. Also have had some ball sucking that where one nut would be stretched back a moved around in her mouth - painful twinges but exciting as hell.
All light compared to other CBT....
In more than on occasion I witnessed this guy at a strip club. Instead of a traditional Lao dance would have the dancer square up and give him a full force knee right in the nuts. The first time I saw it , I thought she was defending herself from a jerk , but then saw that it was just what he liked. Over time, I'd get off watching it. I'd feel some pain just by watching a dancer just demolish this guys nuts. I'd even get Rick hard on occasion then got get a good grind from the same dancer after he gad his 3-4 songs worth if ball busting!
I thank that stranger for bringing my curiosity to the dark side