The big hunk challenge is when a person is given a Big Hunk Candy Bar, and are then sexed in the poop-chute until the big hunk bar is consumed in it's entirety.
Tim received a t-shirt that read "I survived the Big Hunk Challenge" after he survived "The Big Hunk Challenge".
by Big Slapper May 25, 2010
Get the Big Hunk Challengemug.