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The residual mark or imprint of an individual's butt cheeks, left upon a particular substrate where the person has been previously seated.
Marsha left a perfectly symmetrical buttprint on my nogahide sofa.
by Woodrow Charles January 04, 2008
The impression made from sitting on a couch for so long that it is worn out exactly and only where you sit. It will be there even after you leave your seat.
Dad, it's not comfortable sitting watching tv on the couch because of your buttprint.
by erikked August 31, 2010