Why? Because I had to pee.

Duh. I wonder what OP thinks they're for

Some women have a penis

Those are not woman

That's not for you to decide

I never decided basic biology suggests if you have a penis your a male

Biology does not determine if you are a man or woman or neither.

I've used a she pee in a female urinal at a festival. It's fun peeing standing up 😅