Only thing you need to study is your ass.
4 seconds sound clip from the The Nutty Professor (1996) movie soundboard.
You can hear this line at 00:14:40 in the Blu-ray version of the movie.
Quote context
[...]
- Once you work out, your metabolism starts to speed up, you can eat anything you want.
- Recent studies have shown that certain people are genetically predisposed to gaining weight.
- Someday in the near future, we might even find a cure.
- Only thing you need to study is your ass.
[...]