A piece of black tarmac walks into a pub, demands a whisky and loudly challenges everybody in there to a fight, one-on-one, no holds barred.
He proceeds to knock 3 men out clean in a matter of minutes. The pub is subdued and the tarmac stands arrogant at the bar.
Suddenly, a green piece of tarmac walks in and demands a fight. The piece of black tarmac dives behind the bar, cowering and shaking.
"I thought you were hard?!" said the barman.
The black tarmac replied "Yeah, but he's a cycle path."