A word to describe a boy who when enters a realtionship, becomes obsessed with the girl to an extent where every second word from his mouth and social network update is about how much 'love' he feels for her.
Fred looks at facebook and sees, for the fith time in a row
"Bill: I love you Colleen, you're my one and only!"
Fred - "Jeeze, that guy is such a jahn *hides from newsfeed*"
by KillPixie September 3, 2010
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Pros: the most loving and caring person you will meet. Driven. Good in bed. Hard worker. Will do anything to see someone happy or smile.

Cons: can be insecure and and have anxiety
a jahne is person who feels for anyone and does loves beyond control
by Eshee June 4, 2020
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You see that girl last night?
Yeah dude been jahnsing her facebook.
by Rus T Shackleford September 10, 2012
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Jahn Is the hottest kid everyone loves him and a very funny guy, But don't push him he might lose his mind and get physical. Also, loves his friend and he would always care about you and help you when your down and make you laugh always and he is the class clown of all of his class.
by why is that UHHH March 10, 2019
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Jahn is one of the best friends you can ever ask for, she can get mad and annoyed so easily, she can stress you out at times but you know she the best thing that could happen to you, jahn is sexy and fine and whoever has a jahn in their life is lucky , y’all niggas Better treat her well cuz you don’t see a girl like her these days
Jahn so poppin

Yo did you see jahn she so fine
by IAintHavingNoPiglets March 31, 2018
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The name for a boy who looks like a nerd young but grows up to be hotter than most of his friends.
Timmy managed to become a real jahn since we last saw him.
by SalvatorianJustice October 16, 2017
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