Sandriding is the Fremen term for riding on one of the movie's giant sand worms, which they also call Shai Hulud. In the movie and the Frank Herbert books on which it is based, the desert-dwelling ...

More commonly known as the sand ... can hatch and migrate, spreading throughout your lungs, muscles, and even your brain. If that sounds gruesome, wait till you hear about the loa loa worm.