The stage between a flacid penis and full tumescence; in a semi erect state. Derived from the pottery terminology describing the leathery state which clay will enter before fully hardening. Coined by Adam Carolla on the Adam Carolla Show.
"I'm sporting leather," says Adam to his other loser buddies in ceramics class as a hot chick enters the classroom.
"Look at the rack on her! Welcome to the leather state, boys," exclaimed Ray after crapping in Adam's Rams beanie.