When your labeled by police or doctors as being an endangerment to yourself and others. Once labeled as 51/50, you get taken to a pysch ward for a 72 hour hold to see if your mentally stable.
He threatened to beat up his parents, so they called the cops & they 51/50'd him.
by jdmvero April 5, 2010
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a fun video game on the game known as roblox that is made from memes based of area 51 storm raid jokes
yo i just went RUNKER 51 and found t posing shrek and they dont stop it i got 100 RUNKOINS for bringing him home
by kindagoodmealfan911 September 6, 2020
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The fifty-first area
Lets go spy on those crazy ass doctors examining those aliens at area 51! - I dont know, davy....
by Mr. Sid June 9, 2004
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police code meaning crazy and violent. often used as slang meaning the same.
cop: "we have a 51/50 here. im gonna need backup."

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person: "that dude's a fucking 51/50. dont mess with him."
by Kennedi Greene August 22, 2007
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Where the U.S. government pretends to do important secret things
I've been to area 51, it's not all that great.
by lolwtfwhocares April 17, 2009
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A larger than normal areola which surrounds the nipple and is a major turn on for some people.
Yo man, you seen my Jessica's tits? Areola 51 for sure. Fucking gorgeous bro!
by Jrock77420 August 5, 2018
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Sometimes, you're wrong.

"Rule Fifty-One" was the title of the 7th season finale of the TV show "NCIS," referring to Special Agent Gibbs' established 50 rules for being a special agent of the Naval Criminal Investigative Service. At the end of the episode, in which he needed a lawyer, he went through a box with pieces of paper on which he'd written his rules, and one said, "#13 NEVER, EVER INVOLVE A LAWYER." He turned it over and wrote, "#51 SOMETIMES YOU'RE WRONG." A major admission for Gibbs, even to himself. If he can admit it, we all can.
DiNozzo: "Well, Ziva, it's like Ben Affleck said in 'The Hunt for Red October'... "

McGee: "Tony, Affleck didn't start playing Jack Ryan until 'The Sum of All Fears.' Alec Baldwin played Ryan in 'Red October.'"

DiNozzo: "Seriously, McGeek? YOU are challenging ME on a movie reference? I'm always right about these things, especially when Sean Connery is in the movie!"

Gibbs (slapping DiNozzo on the back of the head): "Rule 51."

DiNozzo: "Ow! Oh yeah: 'Sometimes, you're wrong.'"
by UncleMikeNJ July 7, 2011
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