(not a technical analysis)
Elorah brought me a hairband today and asked if I would put her hair in a ponytail. After doing so, she proceeded to prance around the house saying,
I’m a girl, I’m a girl, woo-hoo, I’m a g-i-r-r-l!
Ethan, on the other hand, would run around the house—full-tilt—proclaiming:
I’m a ninja! I’m a ninja!