I didn't think so. A comedian named Daniel Tosh challenged people to send in videos of themselves doing it and all the ones I saw failed. But then I found this video online, after Googling "cinnamon challenge".
If you try to shallow cinnamon powder, it will go up your nose and you will kinda choke and cough and feel like spitting all the time to get rid of the stuck cinnamon powder in your throat. Dont try it unless you're a pro. lol!
It can be done. I saw it on Americas Funniest Home Videos. Three weeks ago there were two guys on a dare trying eat a teaspoon of cinnamon. They put it in their mouths at the same time. They turned a few different shades of, I don't know, it looked like they were green. One guy spit his out, then vomited. The other guy stayed green, gagged, turned circles, it went down, then he drank a lot of water. He said; he would never do that again.