The clitoris is a small organ with a lot of nerve endings that peeks out from the tiptop of the vulva, is often covered by a hood, and extends down.
After all, it's easy to tell when someone with a penis has an orgasm. They can visibly ejaculate. But people with a clitoris have a subtler reaction.
The clitoris is a fascinating part of the female anatomy. Not only because it's simply awesome, but because the only purpose of the clitoris is to.