Father of three Timothy Eberle knows how to stage the perfect prank [1]. After purchasing a SimpliSafe doorbell [2] for the front door of his family home, the dad decided to have a little fun with his father-in-law, Mark, by telling him that the device had the ability to scan your retinas. Seems like something out of a James Bond movie, right? "I told my father-in-law that our new doorbell has a retina scanner [3] to unlock the door," he captioned the now-viral video, which has amassed over 453,000 views in a week. Apparently, the grandpa in question bought the white lie, and as silly as the clip captured by the device is, I simply cannot stop laughing. We have a sneaking suspicion that Timothy will be showing family members the hysterical video for years to come!