masturbating. similar to jacking off, whacking off, flicking the bean, chocking the chicken, spanking the monkey, slapping the ham, fighting with your purple headed yogurt slinger, and tug of war with cyclops.
"Sorry i had to ride the dolphin. Saw this really hot chick."
"Dude thats nasty!"
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?"