An airline pilot told me this ... He was flying some non-english speaking business men on a private plane when one of them indicated that he needed to pee. The pilot explaned that the bathroom was behind the curtain and where there was a funnel to pee into. When done, one should pull the handle to flush. A few minutes later the same fellow was back up front with his pants down around his knees, his tie blown over his shoulder, and a white stripe going up the front of his body. And in his hand was ... the fire extinquisher.
(From the "Rest" of RHF)