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… » 2/21/11 6:00am 2/21/11 6:00am