Playin' Possum is a Macintosh prank program inspired by all those people who sent in their fees for Jump Start! Thanks for making Jump Start! a success! Playin' Possum plays a sound of your choice and then shuts down the Macintosh it's on. Tip-toe up to your friend's, co-worker's, or boss's Macintosh (although this isn't recommended if you're about to ask for a raise!) and copy Playin' Possum onto their startup drive. Then set Playin' Possum to be the startup application.
The next time your ex-friend, ex-co-worker, or soon-to-be former boss turns on his Macintosh, it will startup just like normal. But instead of the friendly Finder, he'll be greeted by Playin' Possum. Playin' Possum will play whatever sound you've set it to play, and turn itself off. The standard sound is "Goodbye Cruel World." Some suggested sounds are "I'm on strike. I will not work until you start paying me more human wages," "I am a SCUD casualty. I refuse to work until Saddam Hussein is dead," "I would never work for you. I'm turning myself off," (add your favorite Playin' Possum sayings here.)
Of course, Playin' Possum doesn't really kill your boss's Macintosh. His Macintosh is just "Playin' Possum." Simply startup his Macintosh with a different startup disk and delete the Playin' Possum program.