Norm those are called Billy Bob teeth he is wearing. The following is not intended to an advertisement just showing examples he could have worn.
Billy Bob TeethA friend bought a set that looked like shark teeth and every time he put them on I'd burst into uncontrollable laughter!! They looked so ridiculous. It got to the point where I almost begged him to put them on again for the belly laugh. Sadly he has lost them, but only the other day he found a rubber dog snout you put over your nose and the laughs came thick and fast! I just have to think about it and I'm smiling.