Clarklov's Tummy

I've commented before about how I eat the same things for lunch in the same order every day. Today I brought only string cheese and a granola bar, knowing that I wasn't sticking around at work past noon. (Don't worry, I got here at 4.) I at the granola bar around breakfast time, and then at 11:45, roughly normal lunch time, I pulled out the string cheese, normally the first thing I eat out of my lunch. I glanced at a website or two as I ate, and then when the cheese was gone, I reached for my sandwich. Only after reaching did I realize that there isn't one. Any my stomach is now hungry for a sandwich. I've apparently trained myself very well.