What British words or expressions do you enjoy and wish you could use in North America?

I adore “cheek” and “cheeky.”

“I couldn’t resist taking a piece of cake. I hope you won’t mind my cheek.”

“Please explain, again, why you’re so annoyed, but this time with a little less cheek.”

“That cheeky girl drank the last cup of coffee and didn’t make a fresh pot.”