A white guy that thinks he is(or wishes to be) a nigger. He will wear a hoodie and get down to Jay-Z and bounce while he walks.

Mature tweeners will probably have large 4x4's with blacked out windows
Random person: Hows it goin Honky?
Tweener: Fuck you, I is black, Jay-Z rulz
Random person: prick
by Dr_Pepper February 27, 2008
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oral sex on the area area between the balls & a-hole; licking the perineum, male or female.

she lifted up my sack and gave me a "tweener"

see also "bonch"
see also "tossing the salad"
by rob February 10, 2006
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When a long married man receives unexpected sexual favors from his wife between two dates when he might expect such favors.
A man with a January 15th birthday goes without on his birthday and then looks forward to Valentines Day. If he unexpectedly receives a blowjob on Feb. 1, he has just had a "tweener"
by Todd A. Wilson February 7, 2008
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A person who is not ugly and not "hott", but in be'tween'.
<@AuroraX0> I'm so f-in ugly.
<@Crimson> Yeah, you kinda are. You're not even a tweener.
by Matt February 11, 2004
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People who are sexually intimate with when they are both between relationships - similar to friends with benefits, but with the expectation that while the friendship will continue, the benefits are put aside when one of the people involved gets involved in a romantic relationship.
When I'm not dating anybody seriously, I call my tweener to see if he's single too.
by An Ethical Bimbo April 26, 2010
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same as the "taint" but funnier 'cause not everybody uses it and some people don't know wtf it is.

The skin between the genitals and the chocolate starfish.
On a mountain or BMX bike:

I was nose heavy on that last hit and my seat hit me right in tweener!

Man, I love it when your girlfriend licks my tweener.
by radicalrick November 7, 2009
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a chick that is between a dooer and a nooer. not super hot, but good enough to take home
I was so drunk last night that that tweener chick i took home looked like a total dooer!
by joe1317 July 18, 2008
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