I knew someone who ate a spoonful of chili powder - His reaction was much the same as this, except it made him puke and he couldn't taste for about 5 days.
This guy ate cinnamon. You gotta be crazy to do stuff like this, but the reactions are priceless.
Also this is crazy - And not done in video editing. Apparently this is what happens when someone dumps
Fluorescein into a river: