I think Happy must be from Nebraska because he reminds me very much of the diner owners from my childhood.
Rocky from Rocky's Cafe in Havelock (Rocky was a woman, btw) who used to push me to eat the liver, telling me I wouldn't get tall if I didn't (hey! she was right!).
The guy from Traveler's truck stop who used to pull a quarter out of my ear and pull his thumb off EVERY SINGLE TIME I went in there.
The waitresses at King's who used to have me read the menu when I was little, and would call out to other customers, "Hey Collie! Listen to this kid read!"
In the midwest we call that "friendly".
Not sure why it would be offensive for Happy to recommend the foot long or say that Americans eat hot dogs - they DO eat hot dogs. Baseball, hot dogs, apple pie, and Chevrolet. No mention of Turkish or Mediterranean food in there. I'm also not sure why you'd suggest an American diner serve that stuff anyway.
PS, to the review writer: A corn dog appetizer is usually little smokies battered and fried corn dog style. It's definitely an appetizer, or sometimes you can get it as a basket with fries.
The dead giveaway that Happy is a midwesterner is if he puts cheese frenchees on the menu. You all won't understand that, either.