Twin pranks are great if you have a twin or somebody who looks just like you, but if you don’t, the 'Watch My Dog' prank only requires some matching clothes, a friend and a dog and it will confuse people just as much.
For this gag, YouTuber Jack Vale and his friend Greg Davis Jr. (also known as "Klarity" on Vine) don identical outfits with memorable colors and ask people to watch a dog. From there, the experiment is meant to see what happens when the other identically dressed guy returns to pick up the dog. The prank requires people to be attentive, since the two men are of different races.
Most people adamantly refused to give the dog back to anybody but the man who originally left the animal in their care and were quick to notice that Vale and Davis were not the same people, despite their identical clothing choices.