Playable Angry Birds Birthday Cake is the Only Spin-Off Video You Need …

It may've taken poor Dad 10 hours to make (and just minutes to destroy), but there's something to be said about this cunning physics exercise forced upon the six year old birthday-boy. We hope he learned a valuable lesson about the rules of position, velocity and acceleration—not to mention the importance of brushing… » 2/21/11 6:00am 2/21/11 6:00am