mcfly 

A really fat fly who has eaten too much McDonald's!!!! :-)

eeewwww look @ that mcfly buzz,buzz

mcfly by Annabell Ride April 19, 2008

mcfly 

busted with a fat one.

enough said i think.

mcfly by fuckya March 29, 2005

McFly 

Coined in Redlands, CA, this colloquial term is used to describe the sandwich at McDonalds consisting of a cheeseburger, three chicken McNuggets, and BBQ sauce. Usually a meal consumed by daring top-tier athletes before games, matches, meets, etc.

Athlete #1: I need something to get me through our game, I haven't eaten all day.
Athlete #2: You thinkin what I'm thinkin?
Both: McFly!!!

McFly by Zevalkinky April 2, 2011

mcfly 

Family with loser tendancies. Occasinally produce good looking males
(Seamus, Marty, Marty Jr.....and George too if u r into geeks)

"No McFly ever amounted to anything in the history of Hill Valley"

mcfly by StarFox September 4, 2003

McFly 

Originally used in Back to the Future movies and now pertains to three male hookers: Jason the American bitch, Jonas the Swedish pimp, and Russell aka pooh pants

Hey, McFly, I thought I told you never to come in here!

McFly, why don't you make like a tree and leave!

McFly! I thought I told you...oh wrong room!

121 giga watts! 88 miles per hour!

McFly by Doc April 17, 2004

Mcfly 

Officialy the worst band ever. They are an english pop group, and are cheesey fake wannabes. they are all really ugly and mime playing their guitars.

trying to be something u arent

Mcfly by Nic March 8, 2004

mcfly 

Stupid little whiney shits that try sound slightly american (their balls haven't dropped). Great yeah they can play their own instruments but aren't bands supposed to be able to play them anyway? No doubt they will split up soon and another band like them will take over.

News: The band Mcfly announced today that they will be ending their career, but no worries as a new band named Mcbusted will be making their debut soon.

Me: when will it end?

mcfly by Mr. Mr October 2, 2006