Sprawn... A spray of fluid that originates from the rear of ones open mouth whilst yawning.
Spray & Yawn = SPRAWN
Sprawn is a rare occurance and can not be repeated deliberately. It is a totally randam phenomena which leaves the sprawner suprised and bewildered as to what has occured and wishing they had had the manners to cover thier mouth. It is very similar to a snake spraying its victim with poison.
"cover your mouth when you yawn... you just sprawned me in my eye!".