The paradoxical opposite of "boss"; fucking obnoxious, crappy, douchey, nasty, or lame.
Could also be a noun with the above mentioned qualities.
1. Player: "Hey, is Ho there?"
Victim: "Wrong Number."
Player: "But this is what she wrote on my hand."
Victim: "Sorry, but this---"
Player: "Why she gotta play me like that?"
Victim: "Can we---"
Player: "You lying."
Victim: "Oh, I get it, because you're antiboss! You think she liked you! Cute."
BRUTAL HANG-UP
Player: "Where you at? Hello?"
2. Just watch The Lonely Island's "Normal Guy." You will understand.