Top Definition
1.(verb) A person showing actions beyond that of a person who has a 5150 status. This is usually a violent beserk frenzy state that is unstoppable until that individual is somehow subdued.
2. (noun) A person of 5150 status that is beyond any recourse to ever be living with any sanity.
When the officer put the 5150 in the back of his patrol unit, the subject suddenly went 5151 until he knocked himself out on the bars of the metal cage.

Jailor: "Take the 5151's straight to the infirmary. I hate having those noisy bastards in my jail. The 5150's mumble enough, thank you!"
by Laguna Pete September 10, 2006

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