Fun Fact: In 1995, McArthur Wheeler robbed two banks with lemon juice smeared on his face, believing it would render him invisible to security cameras; just like invisible ink. Smiling at the cameras, he was arrested within hours.
His bizarre confidence inspired psychologists Dunning and Kruger to study and publish their famous work on why incompetent people overestimate their abilities, now known as the Dunning-Kruger effect.