Some very capable actresses work solo (with the exception of Teri Diver and cameo-appearing Britt Morgan) in getting groinal glee. Private Pleasures, with nothing out of the ordinary could've very well been called, "Simple Pleasures".
Teri and Sahara Sands are a couple of "Moist Masturbating Mamas" as they make good use of the bath and shower (respectively). In separate scenes the girls use their own M.O. to reach ethereal ecstasy.
Preferring to get moist without a faucet, Sasha Sweetie and Red Riding Hood, stay out of the louvre. Sasha, using her plastic pecker, and Red, opting for 'los manos', reach their peak in less than spectacular fashion.
Like Madonna, it's been done before. Nothing new nor inventive, just women whacking their wee-wee.