via boingboing.net
“How contagious is yawning? Enough that I’m yawning right now just from writing about it. Admittedly, I’d never given it much thought, but I always kind of assumed that contagious yawning—that tendency to pick up a yawn from the people around you and pass it on like the evil videotape in The Ring—was something all humans were susceptible to.”
Why has no one proven the existence of the yawnon yet?