Dingrat
It means that your full of shit and you don’t give a fuck about what they think. Being a dingrat means your a Filthy rat with a big fat ding on it.
Gnarly dude! You look like a Dingrat!

Excuse me Mr? You know what that means?

I didn’t actually mean it that way girl. Give me a break! It’s called a joke.

Well to be honest your calling me something that can really effect someone.

Maybe 😏