You know how Mario briefly freezes after Spin Jumping (Ground-Pounding)? If an enemy runs into Mario (without First-Striking) while he is in that position, it will often think that Mario performed a First Strike with a Spin Jump on the enemy. Also, if you Spin Jump on one of the stone platforms in the Toad Town Tunnels, it will freeze for the same duration of time Mario does.
Not sure if this was worth mentioning or not... also, every time I think I know everything about PM, something like this shows up.
