Funny Psychopath Joke
A bit of red tarmac and a bit of black tarmac were sat quietly in the pub having a pint when this bit of green tarmac walks in, beats the living daylights out of the red bit of tarmac, and then storms off again.
The barman says to the bit of black tarmac, "What the heck was all that about?"
The bit of black tarmac replies, "You have to be careful not to upset that one. He's a bit of a cyclepath..."