No, Bond never uttered these lines as a clever euphemism for needing to visit the restroom.  He did, however, deliver them in Goldfinger while subtly trying to pass along a message to the CIA via his tracking device during a tense encounter with Mr. Solo.

Though the plan didn’t quite pan out, the scene stands out for Bond’s civility to a mobster, which was really a means to an end.  It’s a charming reminder that Bond is an effective gentleman secret agent.