A black guy was walking down the street having to pee something
awful. There was noplace to go, but he happened to notice a house
under construction.
They were in the process of putting on the roof, so there was nobody inside. When he thought no one was looking, he
sneaked inside the house, went into a corner, and began to take care
of the problem.
Just then, the foreman walked in, saw him and said,
"Hey do you work here?" The black guy replied, "No, man." The
foreman said to him, "Well then, put down that roll of roofing paper
and get out of here!".