I went to a birthday party tonight for a friend who has just turned 50. The party was at a well known Mexican restaurant. I knew the food would be tasty, and I knew that the BTD choices would be difficult.

First they brought out tacos. Even from across the room, I could tell that they were loaded with cheese. What do I do? I asked myself. When the waiter put my taco in front of me there was no cheese! Someone in the kitchen had made a mistake, but it worked out for my benefit.

The main course was one enchilada, one tamale, rice, and beans. The corn in the enchilada and tamale were avoid, of course. However corn does not give me the obvious trouble that wheat does, so I decided to eat my dinner and enjoy it.

Temptation was waiting in the form of a beautiful tres leches cake. Tres leches means three milks, and as the name suggests it contains the two biggest avoids for Type Os. Nonetheless, I confess I was considering whether to splurge on my friend's birthday and have a piece of cake.

I took lots of pictures at the party, and I wanted a shot of the ladies who were serving the cake. I got into position, and watched through the viewfinder for the right moment. The lady cutting the cake used her fingers to scoot the cake onto the plate. I didn't have a problem with that - I would probably have done the same. Then she licked the icing off her fingers. That I would NEVER have done. As I watched, she served three pieces of cake, then licked her fingers again. She was in a rhythm, serving and licking. I completely lost my appetite for cake - it was no longer a temptation.

I headed across the room to take more pictures, stopping briefly at my place. "No cake for me tonight," I whispered to the person sitting next to me.