Monty: Haven't you seen that WWII Lockheed C-60 hanging in the basement?

There are two punchlines in this comic: the image-based one in the third panel and the dialog-based one in the fourth. They each come in reaction to the set-up in the second panel, and they are each funny on their own. Putting them together, however, somehow makes them both less funny and results in a worse comic. Turning the first punchline into a cut-away with another panel after it robs it of the power it would have had as a final image, while including the image before the fourth panel makes the second punchline seem like an afterthought.

I get the sense that the cartoonist couldn't decide which punchline was better, so he decided to use both. But that's cheating. Part of working in a medium with severe space limitations is being a ruthless editor. Sometimes you have to cut good stuff so that the stuff you do use is more affecting. Not that there aren't times when cheating can pay off. This just isn't one of those cases.

And just in case anyone's wondering, personally, I would have gone with the first punchline. But I'm a big fan of image-based humor, so I'm a little biased.