This video is repulsive... so watch it in HD for good measure. Gav and Dan confidently attempt the world famous cinnamon challenge. Will they swallow the spoonful just fine, or will they eject a spray of cinnamon dust in glorious slow motion? I'm betting on the second one.Be sure to follow the lads on twitter.Gav - https://twitter.com/GavinFreeDan - https://twitter.com/DanielGruchyShot at 500fps on a Phantom FlexCinnamon Challenge - The Slow Mo Guys