Hold up mr fucking science man i highly doubt you'll actually explode i mean shit you'll probably rupture your stomach or something but I'm sure as shit you won't explode. You've fucking made yourself the science guy of subspuf you don't get out of it. Now explain to me why you WOULDN'T explode.
If you eat the candy quickly enough, it will undergo frictional heating and spontaneously burst into flame. If this occurs quickly enough and pressure cannot be relieved, you will detonate.
However, this does probably involve eating candy at relativistic speeds.