The weapon: breast milk.
Toni Tramel now faces the felony charge after being jailed in Owensboro, Ky.
Authorities report she was originally busted on a misdemeanor charge of public intoxication.
Deputies accuse Tramel of squirting breast milk at a female jailer.
According to a local television station, the alleged breast milk assault occurred as Tramel was changing into an inmate uniform.
Her bond has been set at $10,000.
