You better. It's gonna be fun.
4 seconds sound clip from the Supergirl (1984) movie soundboard.
You can hear this line at 00:43:25 in the Blu-ray version of the movie.
Quote context
[...]
- No, I think I'm gonna stay here and study... get things organized.
- Don't forget to call me Saturday.
- Hey, Linda. I'll see you later at Popeye's then, okay?
- Alright, I'll try. I promise.
- You better. It's gonna be fun.
- Oh, mom, how are you doing? I've had a terrible week.
- With a silver spoon, put two drops of the oil into some water. Right.
[...]