What's he got hidden under that cape of his? Batteries?
4 seconds sound clip from the Superman (1978) movie soundboard.
You can hear this line at 01:44:14 in the Blu-ray version of the movie.
Quote context
[...]
- Tonight at 8, your place. Hopefully, a friend.
- What's he got hidden under that cape of his? Batteries?
- Why did he show up last night?
- Dick, where does he come from?
- What's his favorite ball team, Kent?
[...]