queef? umm. yeah read this shit.

Alright so the other night my friend and I (workin on getting back together) were having sex. As always guys like doggy Style and he loves it so we went ahead and we're doin it doggy stile. I had actually Queefed. But being sweet. As I said ew he said its natural and continued. After that, the next day we had gone to his brother house and we were all hangin out. He bluntly says "mood killer but, have you ever been fucking a girl and she queefs? Like a pussy fart." His brother replied with if she's queefing  You're putting too much air in her, that's what that sounds like. Then my friend started making gagging noises and acted discussed. Ladies any thoughts on this. It was the first time that it has ever happened to me. Is there a way of preventing this from happening and how do I explain what the fuck just happened to him. So he doesn't do this again.