I yawned between the halfway mark and the end.

Real, scientific research has found that, supposedly, yawns are not contagious. Despite that, and before I viewed this video, I've still been extremely skeptical of that conclusion. Personal experience just seems to overrule it on a level that, personally, causes me to dismiss the scientific findings. There must be something there! I just.... can't find the energy to... <yawn>

(I fucking yawned typing the word "yawn". Please excuse me from the gene-pool).

EDIT: evidently it was some time ago since the study I commented about. Today, science believes that yawns are contagious as an indication of empathy.

I can live with that.

It's even cross-species contagious:

http://www.livescience.com/5093-dogs-catch-human-yawns.html

worked on me

I missed the "prank" part.

I like the people who are telling him to stop walking around yawning. Apparently, if you walk around the same spot enough times and fake yawn .....somebody will eventually yawn....the magic of video editing.

One thing I learned from nurses was that if you yawn it's a sign that you're getting better. Critically ill people don't yawn in their experience. Not sure what the science on it says.

I yawned the whole damn video... I hope if I'm ever fighting for my life somewhere my attacker doesn't just fake-yawn.