Twitter user @RYUSO01 has made an interesting discovery. If you draw something on a smooth surface with a dry erase marker and pour water on it, your image will become animated, and you can even manipulate it by blowing on it. Be careful not to try this out on surfaces you don’t want to ruin or porous surfaces!

The point of the prank is that a coin is being pressed into your forehead, and then with a gentle pat on the back of your head you can return in to your hand. The victim is told that everyone can do it. After that their forehead is pressed at heavily with just a thumb, while coin is secretly hidden. The patting could last forever…