A prank in which one person dares another to swallow, without the aid of water, a spoonful of ground cinnamon within sixty seconds. The spice dries the challenge taker's mouth and is almost impossible to swallow. Some accidentally inhale the cinnamon which causes temporary but severe chest pain, much to the amusement of the challenger.
Challengers use prize money as persuasion.
"Dude, come here!"
"Ever heard of the Cinnamon Challenge?"
"No, what is it?"
"See if you can swallow this spoonful of cinnamon in under a minute."
"Because I'll give you five dollars if you can do it."
(ten seconds later)
"Ahuuuuuuuh! Ahouhou! Ugh that's awful!"