noun, verb - dur-dee muh-g rOO-der

-Masturbating to the Watergate trial while wearing a Boy Scout uniform.
Dan Falato told Artie Lange a childhood story about how he was kicked out of Cub Scouts for getting caught doing the Dirty Magruder instead of helping build a tee-pee.
by MsMaryContrary May 20, 2016
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