To perform a surprise sex act by first pointing and Yelling "WHAT THE HELL IS THAT!!" and acting upon once your partner is distracted
Dude my girlfriend wouldn't do anal so i pulled the Marty Mcfly and did it anyway
by magicman1987 March 30, 2011
noun: a puffy vest, usually made of down, as worn by Marty McFly in Back to the Future.
It is a little bit chilly today. I better wear my marty mcfly.
by Sarah234 September 20, 2006
A trick in skateboarding. When you are done skating for the time being you and kick the tail of the board sending it into the air and lands in your grasp.
Explanation: Why are those kids so astoundingly happy when they received their (skate/hover)board back from Marty McFly in the Back to the Future trilogy? The only trick that he does is kick the board up to his hands and give it to the child... silly Marty, you ain't that sweet.

Ex 1: "Dude you've been skating all day... Marty-McFly that bitch and lets do something else"

Ex 2: "Yo, Marty-McFly your board and let me try a kickflip"
by Stevenoni January 20, 2008
To hit someone and run.
He keyed my car so I did a Marty McFly and drove off before he could catch me.
by BsPs September 26, 2008

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