A complete loser; a dud of a human being; a person who has absolutely nothing going for them, but still proceeds to act like they are something special.
Also, a dusty looking person with bad style.
Someone who should pretty much quit life and work at mcdonald's for the remainder of their useless existance.
Person A: Are you going to that girl's house tonight?
Person B: Yeah bro.
Person A: You gonna Netflix and Chill?
Person B: No bro, we gonna go straight to shmacking up.