A duck waddles into a pub and orders a pint of beer and a ham sandwich. The barman looks at him and says, ""Hang on! You're a duck."" ""I see your eyes are working,"" replies the duck. ""And you can talk!"" Exclaims the barman. ""I see your ears are working, too,"" Says the duck. ""Now if you don't mind, can I have my beer and my sandwich please?"" ""Certainly, sorry about that,"" Says the barman as he pulls the duck's pint. ""It's just we don't get many ducks in this pub.. What are you doing ro…