la-di-dah
You're acting like you've seen the inside of a cool kid's brain when you haven't even peed in the same bathroom as them.
Bro, your la-di-dah is just a regular Tuesday for me.
You think you're fancy? I've seen my dog do better.
You said 'la-di-dah' like it's a secret code. It's not. It's just a word.