Paddy is feelin' a bit horny, so he pops down the local red light district. Down a back alley he meets a pro. How much for a good time pet? £10 replies the pro. I'll have some of that, replies Paddy. As he was doing the business a policeman comes up the alley shining his torch. Aye! Aye! What's going on here then? Asks the policeman. I'm having sex with my wife! Replies Paddy. I'm so sorry says the policeman I didn't realise it was your wife! Neither did I until you shone your torch, says Paddy