Or maybe not.
The song is “Yakety Sax” and is most famous from it’s use by Benny Hill.
Youtube users have done exhaustive testing of the theory that it makes everything funny. I watched quite a few.
“Saving Private Ryan” with “Yakety Sax” is not funny.
It has to be scenes with a chase or at least lots of running. This one turns the music off when cutting away from the running. Which makes it funnier when it comes back.
And it has to be sped up. Playing it over normal or slow motion won’t work.