A duck walks into a pub and orders a pint of lager and a ham sandwich. The landlord looks at him and says, "But you're a duck." "I see your eyes are working," replies the duck. "And you talk!" exclaims the landlord. "I see your ears are working," says the duck, "Now can I have my beer and my sandwich please? I'm working on the building site across the road," explains the duck. Then the duck drinks his beer, eats his sandwich and leaves. This continues for 2 weeks. Then one day the