A femboyette is a girl who dresses like a boy, except not tomboy style, they buy all their clothes and shoes from the boys/men's section of stores, usually do not wear any make-up, dresses, or any girls clothes, a femboyette is not the same as a tomboy.
"Dude theres a femboyette in our school"
"You mean the girl who wears boysclothes?"
"Yea, it's like a femboy but the opposite"
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?"