a duck walks in to a bar and asks the bartender for a lager and a fish the bartender gives him the lager but says \"we dont sell fish here\" so the duck drinks his lager and then he leaves the duck then comes back the next day and ask for the same(a lager and a fish)the bartender once again gives him the lager and says \"i told we dont sell fish if you come here again asking for fish im going to nail your bloody webbed feet to the floor\" the next day the duck comes in askes the bartender for the same as the other two days the bartender replies \"im warning you \"the duck leaves comes back a bit later and asks cheekily \"Have you got any nails?\".