I've always thought this was a stupid stunt. Now, it seems, they've found out it's actually dangerous.
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A decades-old stunt in which thrill-seeking teens swallow a tablespoon of dry cinnamon with no water, gag and spew out a cloud of orange dust went viral in 2012, resulting in more than 50,000 YouTube video clips of young people attempting the so-called "cinnamon challenge."
http://www.usatoday.com/story/news/nation/2013/04/22/cinnamon-challenge-lungs/2096163/

What is the point of rules that are not enforced?