how can I explain queefing to my bf?

I literally queef every time I have sex, sometimes loud, sometimes not so loud. The thing is, he isn't very experienced. We had sex once in the missionary position, so there wasn't really a chance for air to get in there, and that was his first time. I'm the only one he's ever been with, so I feel like I have to teach him about things like this, because I don't want him to think I farted all over his dick, ya know? My favorite positions all involve the chance of air getting in there, and I just want to explain it to him before we have sex again, but I don't want him to feel like a 12 year old boy getting "the talk"