The German word "nee" means "no" (slang for "nein").

The word "ne?" is used like a question tag.

Both combined - "Nee, ne?" - can mean

- I can't believe this is really happening.
- No he didn't, did he?
- That isn't true, is it?
- Are you kidding me?!
- No way!
- That's gotta be a f*cking lie!

Enjoy our language, ne?