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!"