Ok, another silly time waster. Saw it on another message board, so I thought it would be nice addition here.
Write a wish.
The next person to reply grants your wish, but there's a consequence to it... (S)he then writes another wish, which the next person corrupts.
Example:
1st person: I wish I had X-Ray Vision.
2nd person: Granted, but it only works in nursing homes.
I'll start.
I wish I had a 30 car garage filled with 30 of my favorite cars.