Gouch Air Balloon

The result of when you're sitting down and your crotch is tightly packed between your thighs, then you let out a high pressurized fart that travels down the anus, then forward past the gouch and out through your scrotum in the form of a silent stink bubble. Sometimes able to be held in your gouch region for long periods until you stand up.

I was sitting in church when I suddenly had to fart, luckily it was a Gouch Air Balloon, so I was able to hold under me until church was over.