Dude looks like a Lady

Today I unconsciously addressed my friend Frances as....."Fran the Man" (a moniker usually reserved for guys called Dan).
Frances was not impressed as you can well imagine and some back peddaling on my part was in order.
Cause I like Fran the Man and want to keep her as a fan.
I explained that girls are calling other girls "dude" now......that its perfectly acceptable and had her name been Judy I would have said "Jude the Dude". She seems to have bought it. And we've moved on.

So how come guys don't talk to other guys this way?

Stan To Bill: hey Lass, wanna go shoot some stick
Bill to Stan: pool and beer, yeah lets go School-Girl sounds like a plan
Stan to Bill: Ok Young Woman....later

yeah..ok...guys start talking like that to other guys and they're gonna get knocked out

So guess I got off easy today with Fran the Man....I walked away with just a warning