One day in the Mexican ocean an octopus was swimming in a very weird way kicking their two legs and swinging their two arms. The next day John the octopus said " We look like humans"
" I know I wish we could change."

So that wish came true, their arms disappeared so that was the end of that, so they thought. Fred and John were playing underwater rugby and John rugby tackled Fred and Fred's ribs were broken and he had what looked like a leg. One leg formed everyday and now octopus have eight legs or eight ribs for the rest of time.

And that is how octopuses got their eight legs.