Divine a spectator's thoughts. You show a small coffin and three small mummies each of a different color. When any one of the mummies is put in and the lid closed, it is impossible for anyone to tell which colored mummy is inside unless it is opened. You now turn away your head while the spectator puts any mummy inside and closes the lid. To everyone's amazement, you tell the color as soon you turn around without even touching the coffin!