Betweenial 

Someone who is born between Gen X and Millennials and often identifies with both or neither generation. Loosely defined as those born between 1978 and 1982.

I was born in 1980 and I identify more as a Betweenial.

Betweenial by Bz3rk July 14, 2016

in betweening 

Being more than friends with someone but less than lovers.

"So are you guys together?" "Not really, we're kind of in betweening"

in betweening by Pink_alpaca March 15, 2019

betweenis 

The distance between two cocks during dual penetration sex. Measured in millimeters.

Hey Earl, thanks for fucking my wife with me last night.... I bet there was only 5mm Betweenis.....

betweenis by MotoRooster October 12, 2007

Betweenies

A thong like bikini where most of the material is "IN BETWEEN" parts of the body.

When I go to visit my friend in California this summer, he promises to take me to the beach to check out all the BETWEENIES!

Betweenies by West Wind Dancer March 1, 2010

Betweenis 

The choice at the end of the night between which weenis to use for a booty call.

Chessa was torn betweenis for JG or AP.

Betweenis by Maxurethra March 25, 2010

In-betweenie 

Somebody who is half black, and and half white.

1st guy: hey did you hear that Bob is an in-betweenie?
2nd guy: WHAT!?!?! im soooo going to be half racist to him.
1st guy: aren't you an in-betweenie?
2nd guy: maybe... *cries*

In-betweenie by the king of egypt December 7, 2010

Betweenda 

Betweenda - The slimy residue commonly found between the cheeks of the ass.

Me: Hey, you want some betweenda cheese?
Tom: Whats that?
Me: The cheese from between the cheeks of my ass!
Bob: Dude! That's gross! You got any fromunda cheese instead?

Betweenda by dpiivarnick April 29, 2009