We rented "Sky Captain and the World of Tomorrow" and noticed that the little warning banner said "Simulated scenes of Sci-fi violence and brief mild language", Which made us wonder what, precisely, they were warning us about. That the whole thing wasn't obscenities, be warned, but contained brief sections of mild language? (Turns out it was "nipples" in a subtitle).
I never see "Sci-fi" without remembering Spider Robinson's assertion that it is the plural of "scum-fum"