But seriously, no offense meant at all. As someone who grew up "in the time period" in southern California the term "dude" is inescapable, regardless of gender. Trying to remove that from my vocabulary would be akin to removing "whoa" or "wow"... (I have zero issues with pronoun preferences)
If the image reference is missed, please give The Big Lebowski a view. It's not necessarily for everyone but it's such a gem.