The art of laying cock to a woman. When a man is truly proud of how well he fucks and with good reason. He takes pride in fucking and pleasing a woman. Not a minuteman.
A mocksman is a person who is skilled in accurate mocking, using insults, such as with a clever "your mom" joke, to shoot down people with stupid ideas, or unwitty comments.
Person 1: "Oh man, I had sex with your mom"
Person 2: "I'd never have sex with your mother. Nothing good ever comes out of her!"
Person 3: "Check out the mocksmanship on that guy!"