This is a video tutorial in the Pranks and Cons category where you are going to learn how to perform a simple mind trick with cups. For this you will need three cups or any similar articles under which another object can be hidden. You then ask one of your spectators to hide an object under one of the cups while your back is turned towards the cups. Then you turn around and point out the cup under which the object is hidden. The trick is to put an indiscernible mark on one of the cups that only you can see and the mark should be towards you. You also ask the spectator to interchange the position of the two cups under which the object is not placed. After turning around you check the position of the marked cup and you will know where the object is placed.