21 Day Challenge Share definition Flag The hardest fuckin challenge. not whacking it for twenty one days!! if u handle this challenge u got a horse cack Eddy: Why is Ron always horny?Kev: Didn't he tell you? He's on that 21 Day Challenge!! 21 Day Challenge by Hugecack!!!!! January 4, 2011 0 0 Get merch Get the 21 Day Challenge mug. Buy Now — $32.95 See more merch