this is going to sound strange, but I once really wanted to eat somehting fattening and starchy, but ended up chewing it up and spitting it out. Sad, I know..
but I refuse to dump detergents and such things on my food. Might as well have a taste if I spent money on it, right? I never do it anymore though, I'm a wise conscious eater now
Edit: I should add that its not purging. When you chew it up and spit it right back out, without the food passing your epiglottis, is not purging...