Aw, poor Chubby-chu.

I smell a william tell moment coming along

Actually I'm fairly sure this is meant to be a parody; Pikachu is playing one of those giant two tiered rice cakes people present a shrines during holidays (new year's for example) this still doesn't bode well for Pikachu as it means that someone is going to try to eat him........

Stop hitting the apple and shoot the lump of electrically-charge lard with those magical arrows.

Actually it's an orange, I think.

Morbid Obesity.
Just another side effect of keeping your pokemon in it's pokeball for too long.

it looks a lot like the earlier artworks for pikachu