Are you sure thats a chair, or the chairatic, The Entity that takes the form of a chair that wraps its body over you before assimilating you into its form when you try to sit on it. its best that you try to keep your distance from that chair, as the differences between the chairatic and a regular chair are still being researched, since the chairatic is extremely good at mimicking, even to the molecular level.
( no this entity doesn't exist yet [ I think ] and yes I came up with that by looking at a chair in the dark. )