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The act of selecting Rick Astley's song, Never Gonna Give You Up for someone else at Karaoke. It is essentially a third-party Rickroll.

There are two main ways to Karaoke Roll someone. The first way is to straight up surprise the victim, in that they do no know that they are going to be called up until it happens. The second way is to hijack their selection by tipping or buying a drink for the DJ, or karoake guy, and changing their song but having him still announce their original selection.
Frank was going to sing "Freebird" but when the music started, he realized he had just been Karaoke Rolled.
by Rabblerouser_ October 18, 2009
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