Guy Pranks The World By Yawning

You know how when you yawn, it seems like the person you are with yawns too.  It appears that yawns are contagious.It happens to Jon and me every morning. Are yawns contagious?? One guy decided to get an answer, by pranking the entire world.

AHHHHHHHHHHHHH..........I yawned, did YOU yawn? I guess we havoe our answer. :-)