I'm not kidding. Listen, you cannot go in there.
5 seconds sound clip from the The Emperor's New Groove movie soundboard.
You can hear this line at 00:26:38 in the Blu-ray version of the movie.
Quote context
[...]
- Fine. I don't need you. I can find my own way back.
- I wouldn't recommend it. It's a little dangerous if you don't know the way.
- No, really. I'm telling you, there are jaguars and snakes and quicksand.
- I'm not kidding. Listen, you cannot go in there.
- Oh. Heh. Still not listening.
- Ah, you... Fine. Fine. Go ahead!
- If there's no Kuzco, there's no Kuzcotopia.
- Scary jungle. Right. Oh, a leaf. Oh, it might attack me.
[...]