Origin of the "SNAFU" Meme?

Your Chaplin reference suggests many if not most of the old silent comedies, plus the W.C. Fields, Abbott and Costello, Martin and Lewis, and dozens of other slapstick and physical comedies are fueled by that same outlook.

A few other acronyms from WWII parlance along similar lines:

JANFU
FAFFH
FUBAR