I think one of the main cultural quirks that non-US people need to understand about the US is that every state, or set of neighboring states, has their own above-average but nothing special regional fast food chain, and most residents of that area will swear on their life that this particular one is special and amazing and perfect and only people from [insert region] know what real [insert food] is like, and will fight (potentially to the death) anyone who tries to say otherwise, when in reality that chain is probably just what the bare minimum of fast food should taste like, but all of our standards have been lowered.
It's honestly incredibly American. Completely pointless loyalty, fast food, regional pride on an arbitrary basis, thinking you're unique when you're not... Of all our harmless cultural quirks, its certainly one of the most emblematic.
Except for In n Out, of course. In n Out is ACTUALLY special and amazing and perfect and us West Coasters are the only people who know what real burgers are.
