"A Queef is the sound a vagina makes when it sucks in a bunch of air for no reason, and then blows it back out. This sound is loud, disruptive, and often vibrates. Unlike farts, Queefs are irrepressible."
When the vagina is resting or when it isn’t “open” the walls inside touch each other, like a deflated balloon. When the vagina is aroused it lengthens and expands, creating space that air (and other things) can get into. If something goes inside the vagina at this point, it forces the air out, and like a ballon when you force the air out of an inflated balloon really fast: It makes a farting noise. The exact same thing happens when air is forced out of your vajayjay. The chances of Queefing is heightened the more times a penis is fully withdrawn from the vagina and then reinserted, which often happens when you change position.
There is no way to prevent Queefing. You either do or don't, and there’s nothing you can do about it, so you can either lol about it or just carry on ignore it, like nothing weird happened. Because nothing weird or embarrassing did happen. PEOPLE QUEEF.