Something large, surprising in it's appearance, or otherwise unique in it's context at the moment. This expletive is used to verbally describe something while having said object or thing being presented to another person or persons. The origination of this term comes from the number fifty being of significant numerical size, it's verbal use as a visualization of something big or unique, and the phonetics of the word itself being somewhat catchy or effective in it's verbal presentation.
Johnny and Michael are waiting for the bus. Johnny pulls a big booger out of his nose, shows it to Michael, and says "OMG!!! FIFTY!!"
by realgerg August 01, 2006
15 more definitions
10 Words related to fifty
Top Definition
Underground surrogate word for "okay". Stems from the 20s and 30s as a positive term for law enforcement agencies cracking down on organized crime and alcohol.
"Is that all fifty?"

-OR-

"Are you fifty?"

-OR-

"She's fifty."
by ZanzibarBreeze December 29, 2009
Fifty caliber.. a round of ammunition the bullet of which is a half inch (12.7mm) in diameter.

A common .50 cal round is the .50 BMG (Browning Machine Gun), the round which is (unsurprisingly) designed for the Browning .50 caliber machine gun.

The BMG itself is the large belt-fed machine gun known as a Ma Deuce. It was invented at the time of WWII but has remained in manufacture to this day because it is a very sound and effective design which it would be kinda hard to really improve on.

Now however there are a lot of other guns, including shoulder-fired rifles and even a single-shot pistol, firing the BMG round.

Fifty can also refer to the weapon used to fire .50 caliber ammuntion.
The Huey door gunner grinned and opened up on the Viet geurillas with his fifty.
by Dirge October 06, 2004
another name for mersh... or the weed one step above shwag... give you a shitty hi that only good if your just doing it to get stoned.
Colman and I bought that fifty at wallgreens from our usual.
by Dave-izzle September 27, 2005
Every woman's idea of the perfect guy that shares not only a connection but also the same 'kinky' and sexual attraction.
"He knows exactly what I like, he's my fifty."
by hopeless07 September 13, 2012
Some good ass weed; fifty for a 8th
Whatz up heard you had some fifties
by A-Hood February 07, 2007
the cops
holy shit, stash it, theres the fifty
by shannon June 23, 2004
Further shortening of FFD (acronym for Fat Fucking Disgrace).
"Look at Kid Fifty over there" (indicating a fat black kid with man boobs from eating too much candy)

"Wow. Check out the comment from Shirtless Doug Fifty!" (indicating a comment left on a busty girl's Myspace page by a fat, shirtless man from Ohio that contains both numerous references to sensuality, and numerous spelling and grammatical errors.)
by Dean PGH June 10, 2008

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