13. The last hour and a half of Waterworld is one long sequence
Essentially, it's one giant rescue mission where Kevin Costner sneaks onto the Smokers' boat, kills everyone, and rescues Enola from Dennis Hopper even though he threw her off the boat. This takes up 90 minutes of time. Oh yeah, spoiler alert.
14. Turns out dry land is not a myth
At the end of the movie—after inexplicably getting rescued by a hot air balloon—Costner and his crew come upon a leafy island paradise proving once and for all dry land is not a myth. Our hero merman, Costner, decides it's actually a sailor's life for he and takes his boat back onto the ocean.
15. Waterworld = Planet of the Apes
Now that I think about it, Waterworld bears striking similarities to Planet of the Apes. You've got a protagonist who's kind of a prick that's trapped in a cage, an antagonist with the characteristics of an angry simian, a through line that this supposedly mythical forbidden world exists literally under your feet, and a steamy love scene between man and ape—actually, that last one was just in Planet of the Apes. I'm sure I've proven my point.