A game where if smeone see's your testicle(s), their it and must show some one else their testicle(s)
Willy: Hey, Mike!
Mike: What the fuck do you what, Willy?
Willy: Ball tag! You're it!
Mike: You sick ass faggot.
Willy: Hahaha
Mike: Greg!
Greg: Yeah
Mike: Ball tag, you're it
Greg: Fuck, do that again and I'll get Dylan to rape you.
Willy: Can't rape the willing.
A game involving the act of showing one your ball sack shouting "ball bag tag!" Then that person must pass it on by doing the same to someone else, the game continues from guy to guy until someone refuses to show theirs.
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.