1. A person who is on the border-line of being a tween and a pre-teen.
2. A person who is not sure if they are a pre-teen or a tween.
1. My parents say I'm growing out of being a teen, but they also say that I'm not mature enough to be a pre-teen. They call me a pre-tween.
2. My parents call me a pre-teen, but my friends call me a tween.
by TheSwiftSilverFox November 15, 2020
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A Tweening Animation is a frame by frame animation, using a oc in a story based animation, "Tweening" is basically when you copy and paste a part of animation to "Loop" Head bobing,Fur or hair moving in the wind, or eyes looking to left or right are examples you'll probably see in a Tweening Animation, also in this type of animation usually has a fluent, clean it to the animation, making very interesting and different to the content of animation from the animator, in my opinion "Tweening" animation is a lot or probably, EXACTLY, I mean, EXACTLY, like an regular Animation meme, like Ticking, Grrrls, Remix, Meteorite, and other memes use these qualities, Head Bobing, Hair or fur moving, or any loop animation cuts you'll see in memes, vents,loops,tests,wips,vines on YouTube of Animations.
"Hey Josh, did you see Sashley's new Tweening Animation on YouTube? It's amazing!!!"
by Kiri the Neko June 14, 2019
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Simply: it's popular music from 2009 to 2012. Coined by the creators of South Park in the episode "You're getting old." They are not making fun of a specific band, artist, or anything like that (maybe dubstep would be the best genre to describe tween wave). People are over-thinking this making it seem like they are ripping on Justin Bieber or something, but its a simple definition idiots.
I was just listening to a radio station that plays the most popular new songs, and that tween wave music sounds like total shit!
by TheAmazingNEZ June 13, 2011
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An alliterative and fun way to refer to the years 2009-2012.
Person A: Happy New Year 2009!

Person B: Yay! 2008 turned out to be quite a mess! Let the Twenty-tweens begin!!!
by Tom Hartung January 10, 2009
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The first three years of the second decade in the 21st Century, i.e. 2010 through 2012, to describe the next generation.
As a child of the 80's, I loved Nintendo, Glam Rock, and all things John Hughes. However, the children of the Twenty-Tween (20-tween) generation are watching bad remakes of great 80's movies and television and profess their love for Justin Beiber, Taylor Swift and the Twighlight Saga.
by Hollywood Comis January 8, 2011
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Parent's don't get it.

(from the south park episode where the kids think the parent's music sound literally like crap, and vice-versa)
Dude my mom won't let me listen to tween wave. She just doesn't get it.
by thepussymasher June 9, 2011
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