Acronym: You Only Live Once
usually used as an excuse to do stupid activities ranging from not wearing a seatbelt to doing drugs
Well, going to smoke with the cool kids who have swag because YOLO, that is why
by what-turndown4 February 10, 2015

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Technically the more badass version of this is the song by Suicide Silence's signature song, You Only Live Once... Or if you're a preteen girl then there's that...
Gonna swear at my teacher. Shit's bout to go down. #YOLO lol

You Only Live Once, so just go fucking nuts!
by sempiternal9 February 03, 2015

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a word used by amatuers- everybody cuz all you mother fuckers looked this shit up
Blonde : "lets jump off the cliff"
Normal: "Why?"
Blondie: "Cuz yolo duh"
by ProCondontbeabitch January 12, 2015

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The act of declaring your are an idiot before exercising poor judgement.
Going all in with a crappy poker hand on the internet with hundreds of people watching and saying, "85 off suit, on the button though. Sometimes you just gotta YOLO shit."
by Gary Daniels, TL Donovan January 07, 2015

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a modernised version of saying, "heyy dude! Watch me do something incredibly stupid" or "mum, I'm twelve if I want to smoke, drink and do drugs, you can't stop me".
Mum: "honey, this is an intervention, please sit down-"
Child: "mum whatever, no, yolo, like don't even."
by Urbanmaster101 January 05, 2015

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a stupid acronym wannabes and "cool" people use.It means "you only live once" which is obvious and stupid because everybody already knows "you only live once"(Its not like you're Jesus or something).
Timmy:YOLO!
random guy:shut the fuck up Timmy
other guy:No,actually Timmy's right *holds up gun and pulls trigger* YOLO Timmy!*BOOM!*
by 1-800retards united December 04, 2013

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A common acronym that teenagers use to stand for "You Only Live Once" usually used in the context of wanting to do something crazy, or fun (usually also stupid). It became popular in 2011 when a new rap song by Drake was released, it was titled "The Motto" it is in the chourus which goes like this

"Now she want a photo
You already know though
You only live once ‒ that’s the motto nigga YOLO
And we 'bout it every day, every day, every day
Like we sittin’ on the bench, nigga we don’t really play
Every day, every day, fuck what anybody say
Can’t see 'em 'cause the money in the way
Real nigga what's up?"
Teenager 1: Aye, you wanna go smoke some weed?
Teenager 2: Nah man i ain't 'bout dat life
Teenager 1: C'mon mah nigga, YOLO
Teenager 2: Nahhhhhh
by Mypseudonymisalreadybeingused November 15, 2013

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