If this is some kind of practical joke, it's not funny and I know funny. I'm a clownfish.
— Marlin (Albert Brooks)
7 seconds sound clip from the Finding Nemo movie soundboard.
You can hear this line at 00:18:18 in the Blu-ray version of the movie.
Quote context
[...]
- What are you talking about? You're showing me which way the boat went.
- Wait a minute. Wait a minute. What is going on? You already told me which way the boat was going.
- If this is some kind of practical joke, it's not funny and I know funny. I'm a clownfish.
- No, it's not. I know it's not. I'm so sorry.
- See, I suffer from short-term memory loss.
- Short-term memory loss? I don't believe this.
[...]