When a guy is eating out a girls pussy, she queefs in his mouth and the man holds the queef in his mouth, then with a forward thrusting motion he blows the queef back into her vagina. After the queef has been re-injected he fucks her which in turn makes a farting noise and ultimately re-queefing his lover.

Blowing air into the vagina during cunnilingus then inhaling it as it queefs out and repeating the process.