Worth1000.com has a bunch of very funny contests to alter photos based on themes. One of the best ideas was to create real-life Gary Larson cartoons. You're supposed to turn one of his Far Side cartoons into reality with photos. I think that's a great idea, and couldn't resist creating one of my own. If only the contest was still running...oh, well, enjoy.
For more real-life Far Side Cartoons, check out some more of Worth1000.com's collection.
Update: I changed the cartoon to add some headphones and make the caption more cartoon-like.