These two gray peices of Tarmac walked into a bar, acting hard, fighting and scaring all the customers away, but the barkeep couldn't do a thing (being tarmac you can imagine how tough they would be).
A little later a peice of red tarmac entered - this caused much suprise to the barkeep as he noticed the two peices of tarmac run scared into the Toilets. The red tarmac wasted no time as he ordered two shots of everything behind the bar, downs it then walks out.
The barkeep went to see why the gray peices were scared:
"we aren't going back out there untill the cycle-path has left"