Top Definition
When a person smiles without showing any teeth and their mouth is the only part of their face that moves. Their eyebrows, forehead, and everything else from the nose up remains completely motionless. Also, they tend to tilt their head in a downward motion while smiling creating a very evil look that lets the receiver know the true satanic intentions of the person with the "heid smile."

This smile is only given when one takes pleasure in knowing pain/suffering is in another person's future.

People that give the "heid smile" tend to laugh at other peoples pain and are unmoved by tears.
My teacher gave me a heid smile while she handed me my failing report card.

Billy gave Timmy a heid smile as he put laxatives in his fruit punch.
by sparkle65 June 13, 2011

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