Up, down, up!

When I up, down, touch the ground it puts me in the mood
Up, down, touch the ground in the mood (hehehe) for food
I am stout, round, and I have found speaking poundage wise
I improve my appitite when I exersize!

I am short, fat, and proud of that and so with all my might, I up, down
And up and down to my appitite's delight! While I up, down and touch
The ground, I think of things to chew (like honey). With a hefty, healthy
Appitite I'm a hefty happy pooh!