Incompetent people are often so incompetent, they don’t even realize their own incompetence. According to the Dunning-Kruger effect, people who are ignorant or unskilled in any area are too inept to notice, so they end up thinking they’re far more competent than they actually are.  (, , )

A hummingbird’s tongue is so long that it curls up into its skull and around its eyes when not in use.  (, , )