Why aren't there vegitarian eating contests?

Okay, not a contest to eat vegetarians, but an eating contest that would have people compete against each other by eating various vegetarian food. I think there's a certain irony to it that appeals to me. "Oooo... don't eat meat... it's MURDER!" and then cut to a bunch of people scarfing down as many carrots as they can. Or tofu. Or sprouts (my favorite visual). Or maybe soy burgers. Tofurkey?