cry havoc

I had figured it was another ref (a la the usual butchered) western/xtian symbolism, of the apple & temptation & innocence & the fall -- note that when an apple's seen in Gundam, for instance, it's usually offered from one character to the next (when it's not being eaten by the character most likely seen as 'innocent').

But that's okay, CP has settled the issue definitively. It's just a reference to the Beatles.