This did happened on two distant occasions during sparring long ago when I was just average but I still didn't think it was over the top painful. Yes, it did hurt but not to the point of getting on floor, quitting and not being able to get up.
A couple others thought I was going to break down but nope, I only took a couple seconds then recovered very fast.
Most Helpful Guy
I've been pussy kicked quite a few times before bottom surgery, and let me say that shit does hurt if hit perfectly right. For example, a friend hit me (payback for a happy birthday kick to the balls) and he only got my hip bone but it still hurt. Another friend, however, was really pissed about my punching him in his balls and got me good. Like he lined up his toe perfectly and hit me RIGHT on the spot, I never felt pain like that. Like I honestly think I felt it as bad as a guy does when he hit me.
Now the reason I hit HIM in the balls was because I was falling asleep in class and he stood over me and scared the living hell out of me, which caused me to flip out and punch the first thing I saw over me which happened to be his crotch.2