No, I was just clearing my throat.
4 seconds sound clip from the Spaceballs movie soundboard.
You can hear this line at 00:48:24 in the Blu-ray version of the movie.
Quote context
[...]
- It's a big mystery. None of the wise men could tell me what it means.
- Wise men, pshaw. Wise guys, you mean. What do they know?
- No, I was just clearing my throat.
- Yes.
[...]