Have you heard this?

The crack in his council house wall got so bad the postman was delvering letters though it instead of going round to the front door. The tenant called in the council health inspector who was looking at the floor to ceiling crack when a fish flopped from one side of the room to the other and dropped down a hole in the floorboards. The inspector got down on his hands and knees to look down the hole. "Oi, Inspector, we'll get to the damp problem later" said the tenant " What are you going to do about this bloody wall?"