Leather State 

As coined by Adam Carolla, the LEATHER STATE refers to the condition of being half erect or the state between flaccid and having a boner. The reference is derived from the use of the term in ceramics crafting, as clay is generally referred to as being in the "leather phase" when it begins to harden and is difficult to work with.

Abbr. "Leather"

Adam Carolla: "Did you see that girl? Man I'm starting to get some leather (leather state)."
Other 'Losers' in Ceramics Class: "Yeah that girl is definitely leather material"

or

Adam Carolla: "I did a couple of bumps of blow and got leather."

Leather State by RMENIAN March 30, 2011

Leather state 

The semi-hard state of a penis between a boner and a frightened turtle. Named for the ceramics term to describe a state of clay when it begins to harden. Popularized by Adam Carolla.

When a man takes nude photos, he should get himself to leather state to avoid looking like he has an inch worm.

Leather state by MysticX401 March 23, 2011