Confuse your Proprioreception

This requires two chairs and a blind fold. The person wearing the blindfold should sit in the rear chair, staring at the back of the person sitting in the front. The blindfolded person then reach around and place his hand on the nose of the other person. At the same time he should place his other hand on his own nose and begin gently stroking both noses. After about 1 minute, more than 50% of the subjects report their nose as incredibly long. Therefore this is called Pinocchio’s Effect.
The Pinocchio effect  is an illusion that ones nose is growing longer, as happened to the literary character, Pinocchio when he told a lie. It is an illusion of proprioception, reviewed by Lackner (1988).
To explain the effect the other way, a vibrator is applied to the biceps tendon while one holds one’s nose with the hand of that arm. The vibrator stimulates muscle spindles in the biceps that would normally be stimulated by the muscle’s stretching, creating a kinesthetic illusion that the arm is moving away from the face. Because the fingers holding the nose are still giving tactile information of being in contact with the nose, it appears that the nose is moving away from the face too, in a form of perceptual capture. Similar phenomenon happens using the blindfolded method.