I gotta go. He's starting to rock and moan.
3 seconds sound clip from the Rain Man (1988) movie soundboard.
You can hear this line at 00:53:04 in the Blu-ray version of the movie.
Quote context
[...]
- Hold on. What do you want for lunch?
- Wednesday's fish sticks. Green lime JELL-O for dessert.
- You want another apple juice?
- I gotta go. He's starting to rock and moan.
- Yeah, it's definitely 12:32.
- Course, there's four fish sticks. There's supposed to be eight fish sticks.
[...]