I need something that accentuates the crack

A skater looking guy with baggy pants talking to his friend while getting off the train at Metro Center:

Skater guy: I'm not into the Uni butt.
Friend: The what?
Skater guy: You know, it's like a uni brow, except a butt.
Friend: What are you talking about?
Skater guy: I am just giving my commentary on how style has effected my life.