That could work. It reall a matter if he’s trying to forcefully declare it or put it out there and see how it’s recieved. I think your way is a tad funnier.
You know what they say- if you have something to say when you’re angry, write it in a letter, sit on it for a while, and only send it after you’ve had time to think and still feel the same.
"It's not U K, it's U S"