How to break the news....

I just got hired to work at hooters!

How do I break the news to my dad and the rest of my family? I know they’re going to be super pissed and disappointed.. but I’m 21 living on my own so it’s not like they can make me quit. My mom is supportive in whatever makes me happy. But my dad? Not so much... he’s going to freak! But why? I don’t understand the harsh judgement that hooters girls get.. Can someone give me advice on how to tell my dad? And why it’s such a disappointment?