A man who drinks a lot is told by his that if he ever gets drunk again she will leave him. Later the man goes to a pub and drinks a lot and throws up all down his jacket. 'Oh no.' He says to his friend' if I go home like this again, my wife will leave me.' 'Dont worry' his friend says. 'Put a £20 note in your jacket pocket. When your wife challenges you, produce the money and say another man threw up on you and gave you the £20 note for the dry cleaning.' 'Brilliant!' the man says and goes home. He walks through his front door and his wife sees him. She is furious. 'No no' the man says producing the money from his inside pocket. 'A man threw up on me and gave me £20 for the dry cleaning.' 'Whats the other £20 note for?' asks his wife. 'Ah, that's from the man who shat in my pants.....'