Keatah

In the nudist camp, they called them Reverse Farts!

Yeah,  I'm just making shit up!  (Pun intended)...

I remember a time when I was a kid and I blew one. I was in school and didn't want to attract attention. So I sat there motionless and I swear the fart went back up into my ass. It had to because at the time I blowing mean ones from hot dogs with cheese and chocolate - no one looked or started sniffing or anything!

You're lucky!  I had one go the other way.