When a girl squirts, why does it sometimes come out her urethra? It's piss, isn't it?

True squirting is fluid excreted, under pressure, from her skene glands, which are located in the roof of the vagina, and their fluid is released into her urethra, so it comes out of her pee hole. It might be good to know that a girl can get an orgasm similar to a guy's due to the skene's fluid being excreted under pressure stimulates nerves at the opening into the urethra.

I don't know anyways you should clean it. It could be a disease. It's not piss, it's the material from the ovaries.