WTF Does this even do?

lol it doesnt do anything

"The Pet Rock phenomenon was an unbelievable experiment performed in the 70s by an advertising executive. The challenge: could he take a simple idea, market it, make people happy, and use it all to turn himself into a millionaire? The answer: yes. And . . . well, we at ThinkGeek love performing famous experiments to see if we can duplicate the outcome. But we need your help.

Simply plug the USB cable into a free port and let the fun begin. The USB Pet Rock will instantly begin to work its magic. People will stop by and ask you what your USB Pet Rock does. Each time, you can make up a new story; for no matter what you say, it will be greater than the truth - because these USB Pet Rocks don't do a dang thing. Except make you smile. And confuse your friends and coworkers, which will make you smile even more. So, get your USB Pet Rock today, and help make us rich tomorrow."

nothing... that's whats so funny about it... it plugs into a computer to do nothing... its a rock after all

You can make your own easily, and it will only cost you $1.

Step 1: Get a rock from your garden, beach, park, etc.
Step 2: Buy a USB cable at the dollar store
Step 3: Carve out a small hole in the rock, and plug the USB cable into it
Step 4: Plug the other end into your computer and watch it do nothing!