And then the sea cucumber... Well, they I'm mixed up. There was a mollusk and a sea cucumber. None of them were walking...
9 seconds sound clip from the Finding Nemo movie soundboard.
You can hear this line at 00:08:40 in the Blu-ray version of the movie.
Quote context
[...]
- Hey, you're a clownfish. You're funny, right? Hey, tell us a joke.
- Well, acutally that's a common misconception. Clownfish are no funnier than any other fish.
- Yeah! All right. I know one joke.
- Sheldon! Get out of Mr. Johanssen's yard now!
- All right, you kids! Where'd you go? Where'd you go? Where'd you go?
- Dad, dad. Can I go play, too? Can I?
- I would feel better if you go play over on the sponge beds.
[...]