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San Francisco Backfire

The act of trying to fart while a penis is going into your butthole, and when put in with enough velocity the gas bubble makes its way up and you end up burping.

Greg: Man I shoved it in so quick last night right before he farted that it went up and she had the old San Francisco backfire.

by MidnightSquirrel August 1, 2018

2👍 2👎