Top Definition
When your partner farts during the sexual position of 69.
When you and your partner are num numing eachothers no-no parts at the same time, and one partner farts (accidentally or on purpose) in the other partners face, mouth or nose, thats a blowback 69. Blow blowback fart face fart in face 69
by will bachenspice March 31, 2014

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