One of the most popular current online crazes is something called "Play Him Off, Keyboard Cat," a user-generated video meme.

The formula is a simple. A clip is played of a pratfall or some unfortunate, self-inflicted accident. This is immediately followed by (always the same) old clip of a cat playing an upbeat tune on a keyboard.

The keyboard cat is, in a way, the smiling face of fate, perpetually making light of silly human failures. It's not stupid pet tricks, it's stupid people tricks. Like the old vaudeville hook, the keyboard cat will play you off the stage.