Twinkie Defense Law and Legal Definition

Twinkie Defense is a derisive label for an improbable legal defense. It is not an actual legal defense in jurisprudence. In a claim by a criminal defendant that at the time of the crime he/she was of diminished mental capacity due to intake of too much sugar, as from eating "Twinkies," sugar-rich snacks. The defense was argued successfully by a defense psychiatrist in the notorious case of former San Francisco County Supervisor Dan White, who shot and killed San Francisco Mayor George Moscone and County Supervisor Harvey Milk, resulting in White's conviction for only manslaughter instead of murder.