Farting while engaged in 69, giving a Dutch Blindfold, or at any point where the person giving you a blowjob's head is between your thighs.

Sometimes used during Sigma Chi initiation.
I do not care how pissed Lisa was. Bitting down is way too harsh a response to a Polish Wind Tunnel.
by AppleB July 21, 2010
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When two sexual partners are both on all fours, facing opposite directions so their butthole are eye to eye and they keep passing the same fart back and forth into each other's anus.
You can tell those two do the Polish Wind Tunnel to each other; they're from Missouri, after all.
by ThisGuy2001 July 11, 2022
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