How are some people able to bite, chew and swallow glass? Do they really eat it?

Question

I saw a chap on the telly eat a pint glass - he bit into it, chewed it and swallowed it and consumed the whole glass. How on earth do they do this? Doesn't it tear up their mouth and throat. And ... how do I put this delicately? - where does it go? Does it pass out of the body in the usual fashion? And surely it hurts when it does?
Ouch! I am wincing just thinking about this.
Please tell me how they do it?
Ten points and a fluffy kiss to the best answer

Answer 1

I thought I'd answered this question.
When I worked in a circus, this was 20 years ago, my mate ate glass in the show. He said that the way it broke meant it wasn't Sharpe. I thought the guy was a nutter but I don't think he'd lie to me about it.

Answer 2

while people try this they use a skinny glass, kind of like that of a mild bulb. this might smash undemanding and while it does smash it does in very small products. Then the chewing surely makes it even smaller so because it incredibly is finally end up being purely like sand and there isn't any danger of being decrease. the only risky area of it incredibly is the preliminary biting and reducing a lip.