when you're hungover as shit after a spending a night drunk as a skunk

Someone who is badass hiding online in his moms basement.

A person on the social networking site Facebook who leaves inflammatory, slanderous, and generally hateful comments on other people's Facebook walls with a total disregard for people's feelings or ability to cause them physical harm. They may also click "like" on status updates that suggest the user is having a bad time.

A facebook gangsta is a person who raps about guns, money, bitches, prison, weed, larceny, murder, cars, and any other gangsta shit on there wall or walls of other people. The rap usually comes in text form.