Mac: I'm a Mac.
PC: And I'm a PC.
Pull out to reveal tubes hooked up to Mac's head.
PC: You OK, Mac? What's with the tubing?
Mac: Oh, it's nothing, just getting read to upgrade to Leopard. Backing up the files in case something goes wrong, standard stuff, really. Unlike your upgrade to Vista, I don't have to worry about going under the knife like you did.
PC: [skeptically] Really?
Mac: Oh, hey, sounds like I'm ready to be upgraded.
Mac walks out of the scene. After a pause, a loud shotgun blast is heard. A New Mac walks into the scene, in the process of putting on Mac's clothing, which has been splattered with blood.
New Mac: Hi, I'm a Mac!
PC: And I'm a PC. Uh, what just happened over there?
New Mac: Oh, nothing much. Unlike PCs, it's easier to just replace a Mac when moving to a new system.
PC slowly backs away from New Mac.