1. Used for flirting, sexual activity, etc.
2. Sarcasm, Smartass like.
3. The button to open console in FPS games. Usually used in Source games.
1: Guy: Mmmh, you enjoyed that~
2: Guy: Dude, do you like CoD
Guy 2: Yea, i sure like that game~
3: Guy: hur hur, let me use cheat codes in Half Life 2
! *clicks "~"* Hm...Sv_cheats 1, Impulse 101