Someone who enjoys another person's fist being put into their body, especially used to describe homosexuals.
Dude #1: Portia De Rossi is redonkulously hot...
Dude #2: Nah, she is just Ellen's Knuckle dumpster.
Dude #1: That's a damn shame.
Dude #2: Nah, she is just Ellen's Knuckle dumpster.
Dude #1: That's a damn shame.
by twizzillionaire March 17, 2011