a person who is commonly used in example sentences
guy 1: who is reading this
guy 2: idk but hi lol
short for you. people say this because either they are lazy, (like me) or they cant be bothered
guy 1: hey U
guy 2: what
guy 2: also why cant you type 3 letters you lazy ass bitch like all you had to do was use your lazy fingers, like your so-
*guy 1 has left the chat*