A word used to describe a female of a certain degree of attractivity. A female described as "couchworthy" has generally sizeable breasts and an appealing posterior. The term itself literally means that the female is attractive enough that the speak considers her worthy of being bent over against a couch for sexual activity.
"Dude, did you see that chick? She's so totally couchworthy!"
"Man, Susan's got such an ass. Couchworthy indeed."
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?"