Top Definition
When a woman is so loose her vaginal cavity diverts on coming wind currents and wind gushes out of her when a man enters her. When she is entered a whoosh sound ripples through the man's pubes.
I boned some slut last night and felt a bit of Back Draught.

Rooting this bitch was like a sausage in a hallway. She was so loose. I also got Back Draught.
by Kayse October 18, 2007
14 Words related to Back Draught

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