The preferred method of getting from point A to point B, provided that point A is the Asshole and point B is the Ballsack; most often used by homosexual males
Man 1: I plundered Mikes asshole yesterday, then I tickled his scrotum right after
Man 2: How'd you pull it off so fast?
Man 1: Easy, I used the GrundleBus
by The Captian May 4, 2015
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