v. To turn someone into a chump. Often used reflexively (see example). Earliest documented use is in Director Seth Gordon's 2007 documentary THE KING OF KONG: A FISTFUL OF QUARTERS.
Dude, don't chumpatize yourself!
"Everything would've fell right into place, but he forgot about one thing: About me convincing Steve Wiebe not to be a chump, talking him out of chumpatizing himself." -Mr. Awesome