Dressing masculinely does not make a woman into a lesbian, contrary to popular belief; it's usually more convenient.
Acting masculinely only means that's the gender role that the person identifies with; it has nothing to do with their sexual life. A highly masculine man could be gay for all we know and a very feminine man could be straight for all we know, and both of these cases are frequent.
Short hair? Denim? Leather jacket? Nose piercings? Motorcycles? Suits and ties? Loud and aggressive? How could that be more butch?
He was one of funniest in Pokemon. I will never forget him.
Butch: HEY ITS BUTCH! NOT BIFF!
Jessie and James: Oh, its Cassidy and Bill.
Butch: ITS BUTCH! NOT BILL!
Random person: Its Cassidy and Butch!
Butch: ITS BUTCH NOT--Oh wait.