It really is the word that makes it stand out. It's actually part of the plot, too, the Cannibal Women are cutting off the US supply of Avocados, resulting in a potential Avocado Gap with the USSR (Yeah, it's Cold War Era Movie).

While we're speaking of Avocados, have you ever read The Snarkout Boys and the Avocado of Death by Daniel Pinkwater? I remember it being really good, but haven't read it since I was a kid. Need to hunt it up again.