YouTuber Pranks The World With Yawns

You may be tired of pranks. But here is one where being tired it literally the prank. 

In this recent prank video uploaded by YouTube's RomanAtwood, we're shown the power of the yawn. It has long been debated whether or not yawns are contagious so one man decided to get an answer, and in the process, prank the world as well. The results seem to be pretty obvious, sans those two guys who had a big problem with Atwood's "drowsiness."

So, did you yawn?