Green’s Dictionary of Slang

queef v.

[quiff n.1 (1) + ? SE whiff]

of a woman, to make a vaginal fart (usu. noisy rather than malodorous).

J. Even ‘The Ultimate Embarrassment’ on SA Gazette (S. Afr.) [Internet] Actually, I found more on the topic of ‘queefing,’ which is a vaginal fart of sorts. A fart-like sound that comes from the vagina, and often happens during sex. At least I have never queefed before!
Woemn’s March Poster 21 Jan. Queef On Him .