heaven forbid you get some gobby passengers trying to go to the loo "BUT ILL PEE IN MY SEAT"!!!!
Well, I regret to say that, in the appropriate circumstances, you'd hear it from me. When you gotta go, you gotta go!
I do appreciate that by the authority vested in the cabin crew by the captain it is a criminal offense to disobey a LAWFUL command and, that an airborne body in severe turbulence would pose a danger to the crew and passengers - however, if someone has to pay a visit I'd be interested to see that tested in a British court of law.