When two guys have sex with eachother by use of a dildo in each one, bent over, back to back, so that the force of them having sex will cause their scrotum's two swing against eachother, making a clapping sound.
Cupping the testicular region while spooning. Girl (or boy) is the big spoon, and boy is the small spoon. Girl cups balls while sleeping to keep them warm and to show love.
ball clapping - when two sets of balls meet together as a result of timed thrusting banging together creating a clapping noise
Wade and Ryan after watching a movie together invited Meagan over and ryan entered her from behind into her anal bank and wade entered her into her vagina - through the aggressive pumping both Ryan and wades balls banged and clanged together creating a clapping noise - they had successfully been ball clapping
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.