Axed for a smoke
My favorite scene is the one where Jake literally gets the axe. In the scene, Jake is smoking, only to have Jack Frost ask for a smoke. Moments later, Jack Frost kills Jake with an axe and says, "Gosh. I only axed you for a smoke." I find it hard to keep a straight face when I watch that scene.
Needless to say, the movie doesn't take itself seriously. In fact, it's not supposed to.