A policeman turns up at the station in the nude. His colleagues have a bit of a laugh until the duty sergeant walks in:
"What the fuck are you up to?"
"Erm, well, I was at this big party in a marquee and everyone was
dancing away when suddenly the music stopped and this gorgeous girl got
up on the stage and screamed, 'All the old hags, get the fuck out!', so
all the ugly women left immediately. Then
she shouted, 'All the girls take off your clothes!' and all the girls
got undressed. Then she yelled, 'Down on the floor and spread your
legs!' and they all obeyed once again. Then she came out with, 'All the
men take off your clothes!', which is exactly what we did. Then she
screamed, 'Right you guys - go to work!', so here I am ..."