1. someone who is being extremely sour about everything and really bringing down the people around them. Like a sourpuss only worse.
2. a person who doesnt eat enough pineapple.
1. Arielle, stop being a sourpussy and just trick-or-treat with us already.
2. Amanda did not eat her pineapple this morning, and therefore she is in a bad mood.. and has a terrible odor coming from downunder
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?"