Sip Fel-Fotch Passameer-Day Slitheen was a Slitheen who disguised himself as a policeman named Strickland during the attempted destruction of Earth in 2006. Sip Fel-Fotch was sent to get rid of Jackie Tyler, (TV: Aliens of London) but was electrocuted by the actions of the Ninth Doctor, allowing Jackie to escape with Mickey Smith. Though Sip Fel-Fotch attempted to kill Jackie and Mickey in Mickey's home, he was killed by Jackie when she threw a concentrated mixture of products containing vinegar, which contained acetic acid, at him. Immediately causing a reaction with his weakened calcium-based physiology, the Slitheen exploded, covering Mickey's kitchen as well as Jackie and Mickey himself in his remains. (TV: World War Three)

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