Used to describe someone that looks like they have fell out of the ugly tree and hit every branch on the way down. Normally used on someone you see that you think is ugly and say oh my god she looks like dogs dinner.
Hey, John have you seen Trevors new girlfriend? Yeah, she looks like dogs dinner.
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?"