He's just mad that we both got so fat, we couldn't finish high school.
6 seconds sound clip from the Nothing but Trouble (1991) movie soundboard.
You can hear this line at 00:55:28.146 in the Blu-ray version of the movie.
Quote context
[...]
- Gee, we have to finish this work, for Grandpa Alvin, okay?
- He's just mad that we both got so fat, we couldn't finish high school.
- You're the fat one, because you always eat too much cereal.
- Not as fat as you. You're the fat one.
- Can't you hold that straight?
- Hey. You're the one who's forging. Can't you even see?
[...]