Cock callous 

The buildup of the lining of the throat from repeated deep throating resulting in the thickening and desensations of the throat enabling no holes barred cock gobbling

Babs sure must have cock callouses

Cock callous by Mattchew December 8, 2017

Callous Cock 

A man who has a rough shaft or foreskin from overuse rubbing from constant fornication in the past.

Jenny says she always needs lubrication because her boyfriend has a callous Cock.

Callous Cock by Jackrabbitslim69 March 22, 2022