This video makes me bright red! Being raised in a middle class family in Britain, I used to go over the knee for burping at the dinner table.. now I am trying to induce such behaviour!
I have with me some gas in a bottle and boy it does the trick. I get a little shy and embarrased after each burp to start but after a while I laugh lots after each bellowing belch.
Towards the end, my stomach is full of air, I can just feel it. So I shake myself, bouncing up and down like a cola can trying to fizz the rest up out of me!