A person who basically makes out to something they are not. Can also be used in conjunction with someone's name. But is most commonly used as a way of shutting down someone who is making a fool of them self by trying to be cool.
Blake: Look at Stabler the Pig, he thinks he runs the joint.
Adehan:No Blake-out. But your right, Stabler is the biggest makeout ever!
Stabler: You two better shutup before I bomb ya.
Adehan and Blake:Shush Stabe-out