In essence, the nose touch gesture is a sophisticated, disguised version of the mouth guard gesture. It may consist of several light rubs below the nose or it may be one quick, almost imperceptible touch. Some women perform this gesture with small discreet strokes to avoid smudging their make-up.
One explanation of the origin of the nose touch gesture is that, as the negative thought enters the mind, the subconscious instructs the hand to cover the mouth, but, at the last moment, in an attempt to appear less obvious, the hand pulls away from the face
and a quick nose touch gesture is the result. Another explanation is that lying causes the delicate nerve endings in the nose to tingle, and the rubbing action takes place to satisfy this feeling. 'But what if the person only has an itchy nose?' is frequently asked. The itch in a person's nose is normally satisfied by a very deliberate rubbing or scratching action, as opposed to the light strokes of the nose touch gesture. Like the mouth guard gesture, it can be used both by the speaker to disguise his own deceit and by the listener who doubts the speaker's words.
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