Something that everybody does at one point in time but is illegal in the US until the age of 21.
Damn, i can die for my country but i can't drink a beer because it's Underage Drinking. Fuck. I'm moving.
by JohnDoeWantsToGetDrunk November 28, 2009
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Did u really just search underaged boys you better get off the internet the cops are on the way u sick pedo fuck
Jared: U want to pick up some underaged boys

John:no I’m calling the cops
by U are sick September 26, 2019
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A user under the required age (usually 13) to join an online platform.
Ex.

Bob is 11. Bob joins a 13+ platform illegally. Mandy, who is 16 and is a staff member finds out and bans Bob for being an underage user.
by Henzo1 December 14, 2021
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A person who is under a set age. "Underage User" may be used for forums, online games ect... Anywhere online where there is a set age you must be.
Ex.
Bobby is 12. Bobby joins a 13+ forum. Mandy who is 14 and a staff member finds out- Mandy banns Bobby's arse =) and did it because he was a Underage User
by Ryaa July 18, 2006
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the best thing in the world, probably before porn(for most people)
and a great way to waste time with your 'significant other'.
both participants must be under 18 or so of age.(depends on where you live)
two 15 year olds. fucking in the school toilet like rabbits in between classes then skiving off classes just to screw each other. THAT, my friend, is totally underage sex.
by crazybiatch May 7, 2006
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townie who has not yet arrived at puberty, but still believes they can start on people.
(high pitched voice)
"Mate will yu buy us some fags?"
"no"
"fucking wanker"
"Ha"
by bob April 6, 2005
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