It's a joke in very poor taste.
5 seconds sound clip from the Planet of the Apes (1968) movie soundboard.
You can hear this line at 01:10:16 in the Blu-ray version of the movie.
Quote context
[...]
- Yeah.
- I have come to you from a planet in a different solar system. I am an explorer in space
- Stop right there. Let me see that paper.
- It's a joke in very poor taste.
- Is it a joke to seek the truth about this man?
- Dr. Zira, you state here that a ship from outer space sank in an inland sea of our eastern desert.
- You also state that Bright Eyes had two intelligent companions with him at the time of his capture.
[...]