As the swing reaches its highest point it has all potential energy. When it reaches the lowest, it is all kinetic energy. As it moves up, the pull of gravity changes the kinetic into potential.
Fleur is full of potential energy. She breaks into converting it into kinetic energy at a whim. Usually it is predictable:
To get the cat
To go play on the playset
To pet a dog
To be chased
To get into the street
Tonight she caught me by surprise. After bath, she wanted to read the Pout-Pout Fish. And right before the kissy part she leaves the room and tells me to get up. I try to finish, but she is insistent. So, I do and she takes off. It was her favorite route in a circle.
Fleur now has what I can only describe as a war cry. She lets out this piercing cry just before charging at someone. Usually, she does this towards the cat who flees in terror. (Puffed up tail.) When we play chase, she will use it on me.
She just needs a sword and shield and a bigger flail.