tween adult 

Those persons between the age of 18 and 21. Legally, they don't exist, for they are neither a child, nor a fully matriculated adult. They can be drafted, they can go to jail as an adult, but they cannot check themselves into a hospital or drink alcohol.

Man, I hated being a tween and a teeny bopper, but now I am a tween adult and still can't do shit.

tween adult by Quido1 November 29, 2011

Adult teen orgy

An orgy that adults and teens go to and have sex with each other. And also where teen learn tips to having better sex from the adults.

There having an adult teen orgy here tonight.

Adult teen orgy by Deep blue 2012 November 30, 2009

adult tweens

Young people between the ages of 18 and 21 that have adult liability, but not adult status. Example: can be drafted, can be incarcerated, can enter into contract, no longer subject to parental control; but, cannot admit ones self to a hospital with co-consent of someone 21 or older, cannot consume alcohol at all or be in an area designated over 21 only.

It sucks, we can die serving our country, but under the law we are still adult tweens.

adult tweens by Guido1 November 29, 2011