Four days and counting...
Two pieces of black tarmac are standing chatting at the bar, when in walks a piece of green tarmac. The piece of green tarmac demands a pint of bitter from the landlord in a menacing manner, downs it in one, slams his money on the bar and walks out. The landlord turns to the two pieces of black tarmac and says: "Well I'm glad he didn't cause any trouble - I've heard he's a bit of a cyclepath".