What is Lrb?
1.
Little Rat Bastard
An abbreviation often used by correctional or mental health staff to refer to an adolescent inmate, client or patient that is unusually uncooperative, defiant, deviant, or combative.
"Inmate #2556, elopement precaution, history of fire setting and cruelty to animals and a general LRB."
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1.
To save gasoline by putting a car into neutral (or depressing the clutch) when going down a hill.
The origin is uncertain, since Okies ..