Fun:Scientific Geoterrapinism

Scientific Geoterrapinism is the obviously nutty SCIENTIFICALLY PROVABLE theory that the Earth is flat and on the back of a giant turtle.

Beneath the Turtle
The giant turtle is on the back of a bigger turtle, which in turn is on the back of an even bigger turtle, and it's turtles all the way down from there.

Heresy
Of course, notorious heretic Terry Pratchett points out that we're talking about a turtle, not a tortoise, and therefore it needn't actually be standing on anything. Instead, the world-turtle could simply be swimming through the void.

That does raise the question of why we needed the turtle in the first place, since the world itself could be simply floating through the void on its own.

Huh.