Mommy, What's a Thagomizer?

I love this.
When the Far Side came out in 1982, paleontologists realised they'd never actually named that part of a stegosaurus and began using the term informally. And now, 36 years later, if you type "Thagomizer" into a search engine... pic.twitter.com/pMDYoOrT8d
— Jim Bliss (@JimBliss23) July 21, 2018