A man who likes to pretend to be older and hit on other girls. Being online are their favorite pastimes. Another word for johnnyboy would be stevenroyschimdt.
The stupid johnnyboy keeps looking up my skirt!
by Jess February 18, 2005

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Top Definition
The man, simply a god among men. People appear as mere mortals, because of immortality of his greatness. Women love him, men want to be him. Scottish by background, lover in faith. Can please any women, known for his overwhelming strength and power.
God, Brad Pitt, William Wallace, Johnny Boy
by jhaywood02 March 03, 2009

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a nickname you give to your guy friend named,john,jonathon but you have to have a crush on this boy
person1:JOHNNY BOY!!!!
person2:YES!!!
person1:hi
by ihaveknowclue April 09, 2013

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The person who sacrifices his or herself to the police so that the other people who commited the crime will not get in trouble.
"Hey, where's Tom?"
"He played the Johnny-boy. I hope they don't rough him up."
by Aaron Newquist April 09, 2008

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An unchartered individual who's proficieny is reflected not by the fabrication of artificial certification that society has created for him, but by the stalwart foundation that he creates for himself.
Milt: I made like $50 today selling paybook books
Jake: alright let's a roll a blunt
Nick: I'm just tryna stuff it Johnny boy
by NickTheLim July 07, 2015

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A guy who is CONCEDED and thinks he got good dick but really most people who said his dick WAS good lied. ONLY a few girls actually say his dick is good. LOL. Johnny boy... Not self confidence
Random cute girl: your dick is the best!

Johnnyboy: every girl says that about me!
Random cute chick: -.- you are conceded.
by fwb girl November 13, 2015

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someone who dresses worse than a "shotgun." and smokes as much pot as possible in one day.
i called him a johnny boy due to the fact that he is almos always high.
by SHOTGUN aka P@^1 June 28, 2010

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