when a "bitch" is so fugly(fucking ugly) that she looks like a man
person 1: omg look at him with her
person 2: ewwwww she's a bitchman
person 1: i know!!!!!!!!
person 1&2: *throw-up* at the sight.
person 1: i've seen transsexuals hotter than her
A man who goes from single batchelor to declaring his love for a woman over Facebook, taking her to the pub with his mates, despite not going with other friends and their girlfriends, and moving her into his house within weeks of her being his girlfriend.
He never comes out on his own again and even puts up Xmas trees in his house
Ben was a player with his own crib, then he met a girl and changed into a real Bitchman