The act of leaving the bar or party without informing your friends. Usually in a sketchy manner.
Hey Dave, nice SketchBounce last night! Did you go home with that handsome girl with the mustache?
by Rodneyhaus April 01, 2013
leaving a party/ bar/ club where your attendance was appreciated yet your absence will go unnoticed for at least one half hour. In order to perform this maneuver properly one mustn't say goodbye to anyone and exit while no one is looking. Also known as "sketching out".
He must've sketch bounced, again.
by Loganswifey October 25, 2010