Quote Originally Posted by WalkaWalka
This is pretty retarded. Good weed makes you cough. Coughing doesn't do anything on its own. Now what about the effect of burping up smoke?
burping up smoke removes it from your stomach. to burp you have to increase your intrathoracic pressure (you have to bear down a little, like you're going #2) and that will have a similar effect to coughing.

this explanation i'm not as sure about though.