I remember this strange sci fi film in which an astronaut crash lands on a planet inhabited by primitive humans wearing all white. The only scene I remember is where he tells the people that his name is Corbin and he wants to know there the “president” is… All they do is repeat his name “Corbin” and the word “Prez-ee-dent”, which I found hilarious.
Could be Planet of the Apes (2001).