Heh. I travel a lot, and usually fly Delta, which serves Coke, as an Atlanta-based company should

. I flew United in a trip recently, and the conversation went something like this:
Flight Attendant: "What would you like to drink?"
Olgar: "I'll have a diet coke." (note: little "c")
FA: "Is Diet Pepsi OK?"
Olgar: "Sure, that's what I said, a diet coke."
FA (frustrated): "Sir, we don't serve Coke, only Pepsi."
Olgar: "That's what I mean."
FA: "Mean what?"
Olgar: "A Pepsi. It's a coke. Same thing." (OK, at this point I was having fun with her.)
FA (rolls eyes): "Whatever, sir ..."
I've had similar conversations at Taco Bell.