Why are post-dental surgery videos so GD funny?

I've definitely had my share of anesthesia or pain killer post-surgery freak out/black out/hallucinations but I still like seeing it happen to other people, hahahahaha





And of course the ORIGINAL! David after the Dentist. I hope this kid at least gets to cash in on the publicity.



http://www.davidafterdentist.com/
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The top 100 videos (as per Gawker) for 2010 in just over 3 minutes -> http://tv.gawker.com/5710438/the-top-100-videos-of-2010-in-310-seconds