Surgery that reroutes blood around clogged coronary arteries in the heart that have been clogged due to an excesive amount of eating McDonalds.
Jim: Did you hear Pedro has to have tripple bypass surgery?
Tim: Yeah i heard, Its probably from all of the McDonalds he has eaten. His arteries are clogged from to many Big Mac's.

Jim: So hes having a McBypass Surgery?
Tim: Yeah his McBypass surgery is on monday.
by The Indo Crew July 15, 2010

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