And let me build a bridge
For cannon to reach the castle
And let me set the battle moose on fire

The story:

Twenty years plus, and I had never gotten around to looking up the actual lyrics to this song until today, when someone quoted the accurate version in an article and it rang familiar. No, I never had any idea what a "battle moose" was supposed to be or why it would be productive to set it on fire, but I just figured it was some kind of slang.