You have to grow your facial hair so that you either have a full beard or at least a very noticeable 5 o'clock shadow (including neck hair, etc., so no shaving whatsoever). You then shave exactly half of your face/neck (either all of the left or right side).
You then have to walk down the sidewalk during business hours and ask random people (at least 10) if you "missed a spot" while shaving this morning.
You must keep a perfectly straight face, and you must "stick around" each person for at least 30 seconds (asking follow-up questions, etc.).
$100,000 is awarded if you still have shaving cream on half of your face.