YEah I know all of them have the capacity, They just need to read, learn, concentrate, practice, develop muscles and get used to the technique. There's a porn star, Cytheria, she is a fucking freak. She cums huge amounts of water with each orgasm. That shit is not pee at all. The bladder cannot store so much water, and she cums at least 5-6 times in each scene; and her orgasms are the most intense I've ever seen in a girl. That's friggin sexy.