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1.
v. The act of bumping an outdated forum thread in an effort to fool unsuspecting readers.

An act designed for the lulz.
Tommy: "Hey Chad, have you just seen the news on the forum?"

Chad: "No, man."

Tommy: "The thread says Michael Jackson died today."

Chad: "Man, that's old news. Check the date of the thread, you just got bump-rolled."
by DanSmythWordSmith June 23, 2011