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A moronic hazing ritual that requires new pledges of a fraternity to slide naked down a hallway on all fours with a grape positioned firmly inside the anus. If the grape falls out before the end of the hallway is reached, the pledge must eat it. Also see toilet surfing.
Earl tasted his own shit after the grape fell from his asshole during the grape slide.
by Robb H. July 05, 2006
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