ENID, Okla. (AP) _ An inmate armed with a 3-foot potato masher threatened to give jailers a few lumps during an escape, authorities say.

Rocky Robertson ordered jailers and dispatchers onto the roof of the Garfield County jail early Wednesday, then used an extension cord from the kitchen to climb down the side, said Undersheriff Jerry Niles said.

Police caught him less than a half-hour later.

Robertson had been serving 20 years on drug and child abuse charges.