One who uses a turnip to derive sexual pleasure in one of three ways.
1. Cutting a sufficient hole into a turnip to allow simulation of a desired orafice permitting the insertion of the penis.
2. Inserting a turnip into one's anus, simulating anal sex.
3. Inserting a turnip into the vagina to simulate a desired organ, usually a penis.
Harold drunkenly explained his sordid life a social Turnip Fucker.