Ping-pong ball shooting robot

Forget about whoopee cushions – this ceiling-mounted, ping-pong-ball-firing robot is one of the geekier and better office pranks out there. Constructed by the CKBot group at UPenn’s Modlab, it will remain hidden in the ceiling above the cubicle of your choice, and once unleashed remotely, it will let loose a flurry of ping pong balls on its victim. We wonder just how good the aim of this is, and it will take a considerable amount of time to “reload” this puppy once it has surprised its victim.