Top Definition
Invented by Mr Rice, Mr Nutter and Mr Fresherick, the participant must race on the track 'rainbow road' whist being punched in the face at 5 second intervals. whoever comes the highest place wins.
Terance: Dude, wanna come over to my place for some Extreme mario kart?
Derek: Hell naw man my heads still banging from last time.
by F-Dawg. April 18, 2011

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