(noun) The alpha male who dominates nearby males and incorporates the majority of females into his steed for exclusive reproduction.
The twat macho is, in a more human sense, the attention-whoring badass whom women see as a suitable sperm donor.
Candidly I asked, "Twat Macho...what's your secret? How do you keep 'em coming?"
He replied, "It's simple, women generally love to be treated like shit."
I can't believe he dibbled Susan. He must be some kind of twat macho.