Well, I must confess that I cut loose far more often than "every now and then" -- hence the obesity! -- but among the sinful treats I enjoy, there are two that will send me to a sub-basement of Hell:

1. Scrapple. It's gotta be Hatfield brand, because it's got the best blend of spices on the stuff IMO. It's gotta be fried up like scrambled eggs (mooshed up and pushed around in the frying pan), not fried as a whole slice nor flipped like a pancake (which burns the surface and leaves the inside too soft). For those who don't know what scrapple is, you may be better off not knowing, but you can read all the disgusting details here. Just to prove how bad it is for you, this page verifies that there are no healthy alternatives to it!

2. "Dulce de Leche" -- caramel pudding made by boiling sweetened condensed milk in the can. The food of the gods. Just don't do what my friend did (and I do mean my friend, not me!) and let the hot can explode hot pudding all over your kitchen walls, ceiling, curtains, etc. Looking at the aftermath of that incident kinda put me off dulce de leche for a while... but not forever!