What does Tatta mean in slang?

I'm curious, could you explain what the term "Tatta" means when used in slang? I've heard it around in conversations and I'm not entirely sure of its exact meaning or context. Is it a widely used expression or more localized to certain regions or groups? Could you give me a few examples of how it might be used in conversation? Understanding slang can be tricky, so any clarification you can provide would be greatly appreciated.