This bloke goes to a Brothel and says to the Madam, "I want to get screwed."
The Madam tells him to go up to room no/12 and knock on the door. The bloke walks up to the door, knocks on it, and says, "I really want to get screwed, badly!"
A very sexy voice replies "Just slide £50 under the door."
So the man slides the £50 under the door and waits... Nothing Happens! He knocks on the door again, and yells out "I want to get screwed!"