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The gorgeous frontman of The Maine, a band from Arizona. His birth name is John O'Callaghan, but he is often refered to as simply John O.
Girl 1: Hey that guy is HOT! What's his name?
Girl 2: JOHN O, duh.
by xtina101 August 14, 2008
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2
A name of a misunderstood individual. He is talented, heartfelt, and certainly not gay. Johno always trys to do whats best for people although they're not always trying to do the same for him. He likes a girl, who doesn't even realize he likes her. He's your commen man hero. He gets all the girls to like him, but they all want to be his best friend. He's always the bridesmaid and never the bride.
Johno is so cute, I want to be his bestfriend.
by TherealLoser November 21, 2011
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3
A term used to signify the highest form of bro-ism. This word is used to address a peer or ideal with great respect and care.
"Whats happening Johno, you were really shredding the gnar gnar today!"

"Excuse me Johno, can i get an autograph?"
by Turk Nunya April 05, 2010
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4
A gay individual often seen around childrens playgrounds. Most johno's are noted to have micropenises.
Have you seen that creep?
Oh, that's just a johno.
by Alex E Bailey January 27, 2008
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5
A gay person, usually with curly hair, a small penis, and very little pubic hair, usually likes the same gender
by Kieron Mitchell January 27, 2008
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6
Awesome, godlike with amazing blue eyes.
Johno is awesome
by Prilly November 17, 2016
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The vengeful act of crapping on a lover's chest while they sleep.

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