How It Works
This trick is done by Spin Jumping into a enemy in a way that allows them to be even with Mario's feet after they are bumped. This allows Mario to catch up to them and jump off them in midair.
Basic Meow Dive
By running and Spin Jumping into a stationary enemy that is stunned Mario is able to jump off it in midair.
By throwing a Bob-omb forward Mario is able to perform a Meow Dive at full speed. This will not work with any other enemy.
Mario is able to perform a Meow Dive from a wall jump by throwing a Bob-omb towards a wall and Spin Jumping off it.