American witches and wizards entering an exchange program.
American witches and wizards arguing with British witches and wizards about sports
Quidditch being a whole different sport in America with different balls and full body checks
james turning down every hogsmeade invitation by telling them he’s going stag
Sirius spreading a rumour that he has a cat just so when people ask him about it he can go, “Nah, I’m a dog person.”
Peter being loud so when a teacher chews him out, he can promise to be “quiet as a mouse”
Remus skipping meals so people can hear his stomach grumbling and he can apologise for being “hungry like the wolf.”