It's called the karma bus. We've all been run over by it a few times.
Did you ever laugh at a fellow official for having an OT game the night before, only to find yourself in OT in your game tonight?
Did you ever snicker at your golfing partner because he rolls one into the water 20 feet off the tee, only to find yourself hitting the same shot a few moments later?
There's been a couple of times it has run over me, stopped, then backed up again.
