chunkfart
1)When you try to fart, but just end up shitting yourself and producing lumpy craps
2)A rediculously annoying person- usually refers to someone's much younger sibling
1)Johnny made a fool of himself during the farting contest, when he thought he was going to blast the mother of 'em all, and did a chunkfart instead, and tragically shat himself.
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?"