‘Dude’ was not meant as an insult nor a gender specific term. I’m just from the mid-80’s and that’s how I talk.
Sorry if I offended you.
Out of curiosity if we were sitting around somewhere (bar, coffeehouse, breakroom, etc) with a small group of people and I wanted to express surprise in a humorous manner at something you said, how would you fill in the blank? “____! What is wrong with you?”
(related questions: Generally speaking, when and where did you grow up?)