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1.
The act of punching someone who has had too much to drink but will not admit it in order to force vomiting and save his life.
Dude! The big guy just DeMarco'd Mao Xao Ming in the bathroom, he's puking all over the place!

Yo bro, if you don't get straight I'm going to have to DeMarco you.
by frat rat October 19, 2007