That's really weird. At that point who are you trying to convince that you're a vegetarian? These are people who apparently aren't even trying to be vegetarian. I can understand people who'd claim to have a preference to not eating meat, but two-thirds in the last day is ridicules.

I where a vegetarian for 12 year, without having any real reason, other than I felt like it. Even at my most drunk I could always remember that I didn't eat meat.

Two-thirds... damn that's stupid. "I really want to be a vegetarian, because fluffy cows, but OMG cheese burger". Some people are weird.