Sorry, these two slipped on a banana peel.
5 seconds sound clip from the Batman (1989) movie soundboard.
You can hear this line at 00:10:04 in the Blu-ray version of the movie.
Quote context
[...]
- Hello. I hear we just had another bat attack.
- That's, what, eight sightings now in just under a month?
- I hear the commissioner's even opened a file. True?
- Sorry, these two slipped on a banana peel.
- I'm telling you, man, a giant bat.
- Don't be writing this stuff in the newspaper. It will ruin your already useless reputation.
- Lieutenant, every punk in this town is scared stiff.
[...]