A command to an attack dog to kill by a stutterer.
"Kkkill, Sp-Sp-Spot," said Jethro.
To be killed by the Ku Klux Klan (KKK)
Johnny McMac was kkkilled by the KKK on Thurday, mmmkay.
Jethro was kkkill from too many marshmallows eaten at the cross-burning.