1. ninjina
The female counterpart to the ninja.
* The ninja went home to his ninjina.

* "Dude, that ninja had boobs!"
"Nah, that was a ninjina."

2. ninjina
a supreme specimin of female genitalia, connoting

John: "So last night, Jane and I, y'know... for the first time. But DAMN! she had one HELL of a ninjina brah. My vision blurred and I saw stars."

Jack: "No... seriously?"

John: "Ser'sly brah. She had a ninjina dude... a nin-♥♥♥♥♥♥♥-jina. Totally."

Jack: "Woah."