2) Later it was used in the old west to mean a city person who moved to the west without actually know what he was doing. Synonymous with “city-slicker”
3) Later, in California, the term changed from these insults to a term meaning any male, human or otherwise. Sometimes it is used in reference to tom-girls. Now, it is often used for emphasis as well.
“What’s that dude doing in these parts? I bet he can't even ride a horse!”
“Hey dude, I missed you at the movies the other day!”
“Dude, that's harsh.”
Person 2: *Spacing out*
Person 1: ...so what do you think?
Person 2: Dude
Person 1: I know! It's like...
Girl 1: did you see that dude over there with the sub?
Girl 2: Yeah. nice beard!
Me: OMG! dude! where did you get that hat!?!?!
Friend: I got it at icing. THERE WAS A SALE!!!!!!!!!!!
Me and Friend : EEEEEEEEEEEEEEEEEE!!!!!!!!!
(okay thats a little too girly for my taste, but still a good example of how dude can b feminine)