Usually this is because she is about to ejaculate or has ejaculated. Rarely is it in fact pee. Inside your vagina is a gland that makes the ejaculate fluid. Sometimes when you are sexually excited this fluid is secreted or sprayed out. This secretion is very wet, not sticky and may look like pee but is chemically different.
Female ejaculation can occur with or without orgasm, and is very enjoyable.
It should be noted that not all women ejaculate, and that it is perfectly normal. However, for women who want to learn how to ejaculate, they are usually able to do so easily with some information and instruction. They work together in balance to protect you from infection. Sometimes, however, this balance changes and you may notice an abnormal discharge which could be yellowish, greenish, frothy, curd-like or thick . Some possible causes are allergic reactions.