Top Definition
What you get when a whole bunch of people race around on their asses. Okay, not really. They just use stopmotion.

The song most often associated with butt racing is "Speedy Speed Boy" by Initial D.
The three of them had a butt race in the woods.
#ytmnd #nsmb #stopmotion #you're the man now dog #anime
by ~souba~ November 18, 2005
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