'tween meat 

The section between a man's balls and asshole.

She was surprised at his reaction when she licked his 'tween meat.

'tween meat by JDfool July 26, 2012

late teen meat 

large amount of muscle grown from the age of around seventeen which can boost male confidence if they have not been well muscled before that age.

16 year old, small, thin, sticklike

17 year old, shirt bursting at the seams as he grows extra muscle, ie, late teen meat

late teen meat by JFwolves December 14, 2012

all tweet no meat 

adj. Describes a person on twitter who is often insincere, often either by outright lying to or misleading other people on twitter...
They can do especially this by expressing more bravado via tweet than they actually have.

{Analysis of Word}
It stems from the phrase "all talk no walk", except that meat refers largely to something of substance in general, as well as, (more specifically) the dick...
Funnily enough, because "A man's substance is largely his dick" (NA), a greater solidity of meaning is given to this double-entendre, (meat).

I thought Tyler was an "all tweet no meat" kind'a guy, but he actually wasn't being as deceitful as I thought he was...
unless he's so deceiving that he tricked me into believing this very thing.

all tweet no meat by Not ARealGuy April 16, 2014

meat tweet 

a genital snapshot - often depicting a state of arousal - sent by a gentleman to a lady friend he has just met on a social networking site. Often ends up being permanently downloaded to the hard drive of his wife's divorce lawyer.

My meat tweet a "moment of madness", says Premier League footballer.

meat tweet by Rob9811 November 6, 2011

Tweetmeat

people constantly posting on twitter

"Mel is such tweetmeat, she posts her status like every second on twitter"

Tweetmeat by ebabe February 10, 2010

tweenbeater 

Someone who has sex with tweens; or their penis.

"Dude, Nick is such a tweenbeater!"

"Look at the size of his tweenbeater!"

tweenbeater by Minister of Propoganda February 2, 2009