Leatherhard
An Anal Erection. The point at which your anus becomes so aroused that it actually protrudes from the body.
Dude, that chick was licking my ass so good, I got a massive leatherhard!
Leatherhard
The time period when the penis is hard but not fully erect and is still able to be bent.
"Dude! I just got a major LEATHERHARD!"