rocks
Verb: To rock, (not cook crack cocaine, or any other meltable drug powder into solid-rock-like-balls-of-chemicals, but to play rock music, head bang, drink a lot of Jack Daniels and sleep with at least three groupies at once, scream really loud at the top of one's voice while other people slam their instruments in a rhythmic fashion and call it 'rock music', basically be really cool.). Present tense.
He/She/That Dude/That Chick rocks! *head bangs*