Being/becoming an adolescent who is not yet a teenager, but no longer a "child." A ten, eleven or twelve-year-old doing what they do (denying his or her young age).
My daughter has starting tweening.
by know_it_all_the_time April 3, 2015
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"Tween" is a completely STUPID way of saying the age of which you are child but not yet teenager, this is coming from a teenager. JUST SAY PRE-TEEN!!!!!!!!!
Parents: Yes my son is a tween
Son: I WILL TEAR YOUR LIVER OUT BEFORE YOU CAN SCREAM FOR HELP AND I WILL MAKE THE VIETNAM WAR LOOK LIKE A JOKE!!!!
Parents: K
by 4804277836 January 2, 2019
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A person in their twenties who can't yet adult. A 20-something that lives at home, doesn't know how to check oil in their car, cook a lasagne or hang a picture on a wall.
Eugh, Maddie needs to grow up and get a job, she's such a tween
by FlixSearch January 14, 2016
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used mainly in sports when u hit something really good,hard and/or fast
damn u really tweened the fuck outta that ball
by ladyzman920 March 1, 2006
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When one spend more than 23 hours in two days on any one video games.
Chris had just spent the weekend tweening it on borderlands the pre sequel.
by Jimmy Nips May 15, 2015
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the act of tweening, to tween is to tense the anus and shaft of penis in order to stimulate and maintain erection, tweening can happen at climax of orgasm as a male will tween continuously whilst releasing semen. tweening can also happen when being sexually stimulated and achieving erection.

tweening can also happen when a male has cringed due to an unpleasant, cringeworthy or graphic story involving the penis.
oh my lord, that story about the man getting his dick chopped off was so horrible i tweened.

okay suck me off bitch, yeahh keep going, ahh i just cum, can you feel my dick tweening?

if you stick your dick in my ass whilst i orgasm, you'll feel my ass tweening on your dick.
by Tweensir October 20, 2009
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