Manthority
To be an authority in all things man.
He's a manthority when it comes to dating.
manthority
False authority or sense of authority attributed to or asserted by a man, solely by virtue of being male.
Alice: And then he said, "I'm the man of this household and I'm putting my foot down!"
Carol: He used his manthority?
Alice: Yes, then I slapped him.
Carol: He used his manthority?
Alice: Yes, then I slapped him.