Male "ghost sharks"—eerie deep-sea fish known as chimaeras that are related to sharks and rays—have a strange rod jutting from their foreheads, studded with sharp, retractable teeth. New research appearing in Proceedings of the National Academy of Sciences reveals these are not merely lookalikes, but real rows of teeth that grow outside the mouth.
Pull some out of your mouth and glue them to your forehead.
Gotta work on improving yourself! Even if it doesn’t work, you’ll still feel better in the end.