The line "I killed that fat barkeep!" is shouted by Peter Breck's character Mooney during Experiment #415 The Beatniks.

Breck's high-energy performance apparently struck a chord with the cast and crew, and the line became a running gag on the series. It was referred to in the Amazing Colossal Episode Guide as a favorite moment.

A notable use of the line is during Host Segment Four in Experiment #603 The Dead Talk Back, in which Frank confesses to having killed that fat barkeep (among other offenses).

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