The Pie Guy (CSS Keyframe animations)

I've had a few quiet days at work and have taken the opportunity to play around with some new toys that no one has wanted me to use professionally yet. I've seen a few examples of keyframe animations recently, but the most I've ever done is move a div around the screen, changing it's colour, and resizing it. I was showing this off to a colleague who then (jokingly) said that I should create a man who eats pie and then gets fat. So that's just what I did...