A drunk slut. My friend was drunk one night and tried to call me a "slut" in a joking way and it came out "sloopie". Ever since then I have said sloopie instead of any other mean name I could come up with!
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.