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The act of burping into your partner's anus. Said burp then gets farted back into your mouth. The process can then be repeated for a dual-exhaust bonus.

Farting into your partner's mouth and then having them burp your fart into your mouth or your anus also constitutes as a french tailpipe.
"That french tailpipe smells like poop but tastes like lunch!
by team gonzo January 24, 2010
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