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!".

“Man, look at that guy sprawned all over his lap!”

”Alright, but don’t go sprawning all over me.

”I just wanna get home and sprawn out on my bed, lol.”