What a horny stud claims to be when asking a chick to let him "do it bareback" with her.
No normal dude is 100% thrustworthy --- he may THINK dat he can control whether or not he ejaculates, but it is still an involuntary thing, and if he gets excited enough, all bets are off!
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.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"