T-Rex: One day, the land on Earth and the water on Earth got swapped! All ground became ocean, and all ocean became ground!
T-Rex: Whoops!! Turns out this was fatal to basically everyone?
T-Rex: But there were a few survivors: people in planes and and those on beaches, where the land/water inversion had a minimal effect. Most, however, suddenly found themselves under miles of water while those in boats found themselves freefalling towards what had previously been the ocean floor!
T-Rex: It was rough friggin' times for anyone who'd gotten used to being alive!
Utahraptor: How did this happen?
T-Rex: Quickly! Oh, AND unexpectedly!
T-Rex: Switching from a planet of mostly land to a mostly water planet caused mass extinction, and -
Utahraptor: Wait, don't you mean "to a mostly-LAND planet"? That's what you get if you flip Earth.
T-Rex: No, Utahraptor: this isn't a story. It's HISTORY. OUR world IS the flipped world!!
Narrator: LATER, THE FOSSIL RECORD SHOWS PRECISELY ZERO EVIDENCE OF AN EARTH/WATER FLIP:
T-Rex: Man! History is the "um actually" of academic disciplines.
Off panel: Um, ACTUALLY, I'm pretty sure that's science.
T-Rex: ARGH!!