People are confusing their dogs by holding a blanket in front of their whole body while standing next to a doorway, then they drop the blanket and run away "disappearing". The dogs' reactions are HILARIOUS!! Plus some of these people are really convincing at making it look like they disappeared...others not so much!
I'm gonna have to try it with my dogs, but they're still puppies so I'm not sure if they would focus long enough to care that I disappeared, haha!