Chimney sweep's cancer is a cancer of the skin of the scrotum thought to be caused by long-term exposure to soot, and sooty sweat on the scrotum. The cancer was named after its high incidence among chimney sweeps and holds the title as the first reported form of occupational cancer, as identified by Percival Pott in 1775. Before being recognized as a form of cancer, it was generally mistaken venereal disease and treated accordingly (who knew sweeps had time to sleep around?) Onset of the disease was heralded by the development of hyperkeratotic lesions on the scrotum, called ‘soot warts’ by the sweeps. Sweeps often removed them themselves with either a split cane and or a pocket knife.