Used to describe a time-period following either a trek in da forest, a golfing-period dat is now just using putters and irons, or a guy's hard-on.
If you see a number of guys and gals beamingly heading into da trees wif bags of clubs over their shoulders, wait till they emerge into da open again and then check to see whether da dudes can still "get it up" --- if not, then you can figger dat a different kind of "game-play" occurred, and dat said eager studs are completely exhausted afterwoods.
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?"