13.
“Long ago when I went to Universal in 2001, my cousins and I got to participate in Nickelodeon’s Slime Time Live show. We were given numbers when we entered the recording area shindig. My eldest cousin got called up to pie himself with one of three pies. On the bottom of the pies were numbers corresponding to the ones handed to kids in the audience. My number (10) was beneath the center pie, which my cousin smothered his face with. Thus, I won a year supply of Air Heads!”
“I won a year’s supply of Air Heads: 12 boxes, each containing 72 Air Heads. I gave six boxes away to a charity that helps the homeless, gave some to my cousins, and ended up keeping three boxes for myself. Took me more than a year to finish those three without wanting to vomit the second I opened one.”
—u/TheMrBrad
Source: https://www.buzzfeed.com/morgansloss1/winners-of-year-supply-of-things-reddit