iwfuutaudls: yes laura, he is saying that to make you feel better about it. and yes, queefing is caused by a big dick pulling out completely (therefore making air rush into the gaping hole) and then thrusting balls deep and hard (therefore squishing the air out of her).
the funniest thing to do, however, is to make a girl fart when fucking her. the best way to do this is to have her lay on her back, pull her knees to her chest, close her legs and hold them like that, and squat (not kneel) above her. enter her vagina slowly only half way (in and out). do this for a couple of minutes to get her all relaxed and loosened up. then suddenly thrust your entire member balls deep into her. do it hard and several times and you will be rewarded with a couple of farts.
the reason why this works is this: in that position you are entering her perpendicularly. therefore you are not applying the pressure into her vagina but into her anus. after the first hard strokes you will have squished out the little air that is naturally in her anus. pulling out all the way will cause slight contractions in her vagina which will inevitably open up her sphincter a little bit. air will rush in and then you crush it out of her anus causing her to fart.