But really, depending on the circumstances, anything can be an insult.
Guy 1: "I love pizza."
Guy 2: "Yeah. That's what I'd expect from an AMERICAN!"
All of a sudden you're insulted because you were called exactly what you are.
Zombie Apocalypse:
"Are you a cannibal?"
"No, I'm a normie!"
It's all context you goddam burger sniffer.