Stop. You take one more move, mister...
6 seconds sound clip from the Finding Nemo movie soundboard.
You can hear this line at 00:14:26 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, my gosh! Nemo's swimming out to sea.
- Nemo! What do you think you're doing?
- You're gonna get stuck out there and I'm gonna have to get you before another fish does.
- Get back here. I said get back here now!
- Stop. You take one more move, mister...
- Don't you dare. If you put one fin on that boat... Are you listening to me? Don't touch the boa...
- You just paddle your little tail right back here, Nemo.
- That's right. You are in big trouble, young man. Do you hear me? Big...
[...]