If you haven’t heard of those little “games” that people play on their co-workers, here’s a summary:
You send them to a website with a flash script that poses as a “test of your mouse precision skills”. Basically you have to move the mouse cursor through a maze without touching the walls. If you do, the game is over.
Eventually the corridors get so tight that it’s unavoidable to hit the wall. Then something that scares you shitless happens on the screen. It’s pretty funny. Check out this video and I guarantee it’ll make you laugh: