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5-9

pronounced "Five to Nine". Used when i girl walks past, or tries to PU you or one of your mates, who is under the legal age of consent, but has done herself up so she looks quote "Old enough to F*ck".
Sherm:5-9
swissBoy: haha *nods* 5-9 indeed
theBrother: no for me
Sherm: hahahhahaha
by ricky (shermz) December 10, 2005
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5/9

( MR ROBOT SPOILER WARNING )

The central event and massive cyberattack in the TV series Mr. Robot (2015–2019). On May 9, 2015 (the date chosen as Elliot Alderson's father's birthday, hence "5/9"), the hacker group fsociety (led by Elliot, with help from the mysterious Dark Army) executed a zero-day exploit targeting E Corp (nicknamed "Evil Corp"), the world's largest conglomerate holding massive debt records.
The hack erased all consumer debt data stored by E Corp, effectively wiping out trillions in loans, credit card balances, student debt, etc., for ordinary people. Fsociety framed it as revolutionary wealth redistribution against corporate greed, but it backfired hard: it crashed global markets, caused economic chaos, job losses, riots, suicides, and power struggles. Later seasons reveal layers like the Dark Army's hidden motives, Stage 2 plans, and Elliot's dissociative identity disorder tying into the plot.
In online fandom, blackpill/incel-adjacent, or hacker/edgy communities, "5/9" gets referenced as the ultimate "system takedown" or anti-corporate rebellion symbol—sometimes memed ironically or glorified in dark humor, though the show itself shows its devastating unintended consequences.
Person A: "Society is rigged by corps holding all the debt records."
Person B: "Just pull a 5/9 and erase it all. Fsociety style—debt gone, chaos incoming"
by Brave traveler 88 March 15, 2026
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5.9 Inches in 30 seconds

Someone who lasts 30 seconds and blows there load.
by Al Sahir September 30, 2016
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5.9 cummins

The best diesel engine ever made. Puts the Powerstroke and Duramax to shame.
Man I should have bought a 5.9 cummins instead of a 6.0 powerstroke
by anonymous April 1, 2022
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Royce Da 5'9

A sick Detroit rapper who few people know about
Royce Da 5'9 Is The Real King, and some of his songs were on GTA 3.
by Stylesx August 31, 2006
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Royce Da 5'9"

An emcee straight outta Detroit. He is half the duo Bad Meets Evil with Eminem and is a great lyricist
No ex. needed for Royce Da 5'9"
by Royce23 June 30, 2011
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Royce Da 5'9"

A Detroit Emcee. One of the most slept on in the game. The best rapper in the midwest... And thats coming from a Chicago nigga.
I done paid my dues
I done learned more from my mistakes that I done learned in any grade in my school.
by brian walker September 2, 2005
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