Abbreviation for: "how old, is she hot"
It is used when someone is talking about a girl and you reply with "HOISH" meaning how old is she and also is she attractive.
Friend 1: "hey I was talking to this girl the other day and her and her friends want to meet up with us"
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.