The drive-through workers asking if I want anything else when I just told them "that is all" after my order. AND . . .
The drive-through worker apologizing for the wait, regarless of how long it was, as if I can't handle that 45 seconds it took to get my coke.
I hate that too. I also hate those idiot cashiers (inside) who ask, "Is that for here or to go?" when I'm obviously in the restaurant myself and ordering twenty burgers/tacos/etc. I mean, I can't sit there and eat all of that by myself.