Stump the Buff is a segment created by Tim Heidecker for his show On Cinema at the Cinema. It consists of Tim quizzing frequent guest Gregg Turkington on various movie trivia questions.

An early version of Stump the Buff was released as a bonus episode of the On Cinema podcast. It was available for 99¢.^[1]

A version of the segment was performed at oncinemalive, where audience members would compete for a Carrabba's Italian Grill gift cards.