A fanatical male.
As in an opposite to a female extremist, it is a man with extreme views that women should have no rights or say in anything and are just meant for breeding and looking after him
Worker1: Did you hear that Kate finally got that promotion? She worked so hard for it.
Angry Worker2: What! F**king typical! She only got that because she's a women! Men need that job! They have families!
Worker1: Actually she has kids and -
Angry Worker2: This is sexist! These jobs are for hard working men not stupid woman! Women are meant to raise kids and look after men! So she can f**k off back to the kitchen and make me a sandwich.
Worker3: What's his problem?
Worker1: ignore him, he's a manatical.