Watching this 6-second video will make you smile

Illusions are easy to execute on children, and when done properly, they can be extremely adorable.

Case in point: In the video below, a young brother and sister are standing at the glass door wondering what dad is up to outside. That's when dad adheres to old adage of showing rather than telling. What ensues in just six seconds is hilarious, heartwarming and even heroic.