To do a harley. Is to vibrate ones lips on the clitoris and make a vibrating, V-twin engine sound, that not only entertains the recipient of the cunilingis, but also acts to vibrate and arose the said area.
Girl1: Oh my god last night this guy did a harley on me.

Girl2: Really, was it good?

Girl1: Yeh it was amazing, but it was loud and my dad thought there was a motorbike in my room.

Girl2: I really want one, will you show me?

Girl1: sure.

Example 2:

Guy1: I did a harley on a girl last night and she was wetter than an otter's pocket.
by hearleyone January 16, 2010
Overpriced, outdated, underpowered, icon of America's lower class often used to remedy mid-life crisis by pretending to be an "outlaw" biker while riding fewer than 200 miles per year, often to a bar.
"Sure, 9 out of 10 people would want a Harley if you asked them but then again, 9 out of 10 people don't know shit about bikes"
by sjrsos July 16, 2006
A beautiful, mature girl. She's a tough, athletic, and strong girl that doesn't let anything get in her way. She cares about everyone and everything. Even when she doesn't want to. She tries to cheer you up as soon as se can. She has the best friends a girl could ever ask for. She loves to hang out with her friends and family. When it comes to her personal life though, she is in no mood for sharing. Harley tries to stay far away for drama as she possibly can.
"I love to hang out with my beautiful daughter harley."
by Bridges_32 February 25, 2014
A boy that has impeccable style, extremely hot, most addicting personality (in a good way), unfathomably beautiful, is pretty much fantastic in every way.

When you were here before,
couldn't look you in the eye.
You're just like an angel,
your skin makes me cry.
- Creep, Pablo Honey,by Radiohead
a guy walks down the street and has really good style and is hot, then some one will say: wow that person is a Harley.
by Damn ALL March 02, 2007
Harley Is A Very Beautiful Girl, She Is Often Shy But Once You Know Her She Wont Shut Up. Harley's Often Have Blue-Green Eyes, And Can Be Very Stubborn, But Are Awesome Best Friends.
That Girl Is Definetely A Harley.
by Fab Masta~ May 24, 2015
often times the term 'harley' when used in the colloquial sense refers to a girl who possess class and beauty.

Harley can often be seen around nice shops, colleges, the beach, and italy.
guy 1: yo, whos that nice girl who always wears green and pink
guy 2: fool, thats 'harley'
by hopkins johns piazza August 20, 2006
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