What does being hit in the balls feel like?

It's hard to describe properly.. if it's a really bad hit, you end up curled up in a ball, lying on the ground, nauseated as hell.. it's just this horrid feeling in the bottom of the gut that lingers for awhile. It sort of streaks up into your gut and you just have to kind of stay very still for a bit.

Ending up swollen after is no good either, lemme tell you. Sitting. Very. Carefully.

Have at it.