John Valby

John Valby
Birth nameJohn R. Valby
BornNovember 22, 1944
Buffalo, New York
MediumStand-up
NationalityAmerican
Years active1970s-present
GenresBlue comedy, musical comedy, insult comedy, improvisational comedy
Subject(s)Human sexuality, race relations, American politics, religion, everyday life
WebsiteOfficial website

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.