A person whose existence is the very point of annoyance for most (read: all) who surround him/her. Synonym: douchebag
Joe: Yeah, this kid Sam, he totally busted into the party un-invited and then cut me in line for beer pong. I was like, WTF, dude?
Tom: Yeah, dude, I know that kid. What a waste of human matter. Yeah, that kid should have been a blowjob.