voty2000 on 07 September 2010
Yawning has evaded being understood by scientists because they won't except what a yawn really is. Our alien overlords have implanted undetectable microchips in our bodies that collect information about our daily lives and our bodies. The chip gives off a very weak signal so that it can go undetected. When it's time for the aliens to retrieve the data, they send a signal down that activates the chip and forces the body to yawn allowing the signal to exit our bodies. It appears that a yawn is contagious but what your really witnessing is a delay of yawn from person to person, as the aliens can only except the signal from one person at a time.
