Well the story was that him and Sam Brown made a bet if they can both fast for a week and MJ brothers thought MJ was able to do it but didnt think Sam could do it. So each brother pitched in alot of money on the bet. Later at night Sam was dozing off on the tour bus and noticed that the fridge was opening and saw that it was Michael opening up a ball of tin foil and taking a bite of chicken out! So Sam got his camera and waited a few hours and MJ got up again and did the same thing and Sam quickly took the picture you see above.
Funny story, Sam talked about it on ARL documentary!