a guy who thinks he knows it all but is actually full of shit.
dude 1: "who do you think is gonna win the election?"
dude 2: "not that black guy. he keeps contradicting himself."
dude 1: "how?"
dude 2: "IDK! he just does! i'm not voting for him."
dude 1: "you don't know shit about shit. quit being a cocky-tard."