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a loser, social misfit. Comes from the character marty mc fly's dad in back to the future.
sharon: Hey johnny u wanna go down to the park and hit things with sticks?

Johnny: yeah mc fly! your such social missfit/loser!

Sharon: My mom says i'm an all rounder
mc fly by Tarquinn February 21, 2005
Urban Dictionary Merch
The worst band in existence ever!
12 year old girl:” they are like so the new busted!"
12 year old boy: "yea i got a mc fly hoody thats 3 sizes to big for me and hang around with my other 12 year old idiot friends down the park and that makes me a skater even though i have no interest in any kind of sport extreme or not and would probably be to fat to balance on anything with out handles"
mc fly by asha July 19, 2004
a band who r shitter than any other and suck my ball mc fly suck shitt out of me crack fucking bum boys
Mc FLY by MR GOTH March 16, 2005

sly mc fly

to be as a fly and fly around the world and not be seen
But you die in 24 hours so be sly and you will mc fly
the sly mc fly went to paris and was on its way to china but was splated by the airplane of Your mom
sly mc fly by justin adona January 29, 2008

Muddy Mc fly

When you unzip anothers trousers and defecate inside then zip it up again.
Where's tuffy?

OH , he's in Thomo's office giving him a muddy mc fly.....
Muddy Mc fly by Rustytinman December 21, 2021

Mc-Flyin 

Mc-flyin is the act of getting really high when smoking weed and going to Mcdonalds to satisfy your munchies.

Most pot-heads go through the drive-through window due to fear of police officers
Josh-"Yo Darrel where you at right now?"

Darrel- "yo i just hit a blunt and now im Mc-Flyin.. you want me to pick you up anything?"
Mc-Flyin by Ace Nations August 10, 2009

Buster-Mc-Flystead 

A general term for the combination of boy bands such as Busted, McFly, Son of Dork, Elliot Minor etc.
Guy 1: Hey, dyou wanna listen to some music?

Guy 2: Woah! No Thanks! All your CD changer has is a load of Buster-Mc-Flystead!
Buster-Mc-Flystead by CHaZaa September 1, 2009
More from Urban Dictionary
A group of people, typically women, searching through someone’s digital footprint in order to find more information about that person.
Susie wasn’t sure if her new Hinge match was a creep, so she assembled Galantir and they found out he used to post slurs on gaming forums.
Galantir by Ge-sus September 22, 2026
Word of the Day on September 23, 2026

murderhobo 

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.
DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.
murderhobo by Loup&S September 9, 2021
Word of the Day on September 22, 2026
In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.
"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."
Whale by FQ_GFY February 3, 2020
Word of the Day on September 21, 2026

Concrete cowboy 

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.
Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.
Word of the Day on September 20, 2026
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