Top Definition
The Canadian Pipeline, not to be confused with the Alaskan Pipeline, is when two people each insert the end of a straw or tube into their butt. Then one of them farts, causing the air to travel into the others ass.
Alex: Hey dude, wanna canadian pipeline with me? I had chili for dinner.
Derek: No thanks, you might shart into my ass.
by Derek H. aka xmypantsx August 01, 2008
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