John Dalby

John R. Valby (born November 22, 1944) is an American musician, singer, songwriter, comedian, and producer known for his comedic and obscene song parodies. Also known as Dr. Dirty, he typically performs in a white tailcoat suit and black derby hat. His songs and shows focus mainly on sex and racial slurs, with a mix of current and historic people and events.
Valby was born and raised in Western New York. He attended school in Rochester, New York, where... meer