The male Australian jewel beetle is hardwired to like certain aspects about the female jewel beetle. They like females to be big, brown, and shiny. The bottles they make love to are bigger, browner, and shinier than any female could ever hope to be. In Australia, a certain type of bottle called stubbies overstimulates male jewel beetles. In a trash heap filled with bottles, you will often see every single stubby covered in male jewel beetles trying to get it on. The stubbies are what evolutionary psychologists call supernormal releasers. They are superstimuli, better than the real thing. The
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