Heh, heh. I once had a teacher who would 'mess the air' all the time. And he would stamp his feet while doing it to try to hide the sound.
Here in Malaysia, farting in public is a really strict taboo. It would be akin to running around with your pants down!
That's funny Emile. A good trick
Farting seems somehow a very normal thing to do among people here in China.
Just curious to know why?