So, this is like the opposite of the wish + a bonus thread? Cool.
Granted, but the Pokemon becomes obsessed with eating chocolate and forces you to bring it to the almighty Mount Chocolate at the risk of turning you into chocolate. Along the way, you lose all of your items, excluding your chocolate-obsessed Pokemon, and are stranded in a barren wasteland. Having been deprived of its precious chocolate, your Pokemon finally submits to the urge, turns you into chocolate, and eats you whole. Having nothing else to do, the Pokemon turns the entire Pokemon world into chocolate.
Alright, I wish I had a million Chansey, so I can have eternal happiness :D