The throne. The facili-ility. The round white lemonade and dirtball swallower. Mr. Toilet man (🎵pee-pee in the pot-ty🎶)
Elmer Fudd: "wehes the bafwoom?"
Flight Attendant: Would you like something to drink?
Clark Griswold: I'll have a Coke.
Flight Attendant: Do you want that in the can?
Clark Griswold: No, I'll have it right here.
Too misleading, I've never found anything labelled as a "restroom" at all restful and there's nowhere to lie down and have a rest. I find it a silly euphemism.