A sour cream beaner is a slang term for white mexicans. While ethnically hispanic, skin just happens to be light. May be mistaken for caucasian by people who cannot identify race. Usually are given away to be hispanic because of names that many identify with latinos, such as "Garcia', or "Lopez".
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?"