Queef

Queef (Noun) (Flatus vaginalis, Garrulitas vulvae, pussy fart, fanny, fart, vart)
queef (Verb)
(third-person singular simple present queefs, present participle queefing, simple past and past participle queefed)
Pronunciation: /kwiːf/
Plural: Queefs
A variant of scottish and northern english quiff, of onomatopoeic origin

An emission of air from the vagina, especially when audible
It may occur during or after sexual intercourse or during other sexual acts, stretching or exercise
Positions like Doggystyle or Piledriver encourage queefing
Further there are breathing techniques that help to suck air into the body:
Relax - exhale, empty lungs then hold your breath, now spread both cheeks with your hands and pull in your stomache
The sound is somewhat comparable to flatulence from the anus, but does not involve waste gases