Eating Glass in Elvish

Well I think that the ability to eat glass would be rather impressive. Or maybe with guys it would be just a proof of "manliness" or something like that. Hehe. I know a guy who used to be in the Marine Corps, and he had a friend who could eat glass. He must've been nuts or something, except I don't think they let nuts become Marines. You know, it's kinda like the whole being able to swallow a sword or eat fire or something like that. Good for freak shows. But until you have that ability, you can just tell people that you do in other languages and instead impress them with your ability to tell them that you can in hundreds of different languages. Hehehe. :-)