McDonalds, Burger King, Wendy's, Checkers, etc:
Double cheesburger (only cheese and ketchup), large fry. The girl who used to be at the cash register at McDonalds memorized this order, even though I only go maybe once a month tops. If it is a place with larger burgers, scratch the second burger (or even the double, depending on the size).
If they have it, seafood salad, aseigo cheese bread, american cheese, nothing else. Otherwise Philly cheese steak, onions, otherwise the same.
Clam chowder bread bowl
Foot-long cheese dog, nothing on it. Fries, vanilla milk shake float (if they still have those).
Chicago classic deep-dish pizza
Stuffed-crust with only cheese
Pizza (any other)
Death. I always regret eating there.
Catfish sandwich, biscuit. I sometimes go here just for the biscuits to eat with canned clam chowder, since there is one right near my house.
Unagi (or anything with it), followed by anything with dynamite in it. After that it varies a lot depending on what is available, but snapper, shrimp, crab stick (or better yet crab if they have it), or tempura shrimp or soft-shell-crab are good. When I make it, usually either dynamite shrimp, fried fish, or baked chicken.