Grace and Frankie eventually start a vibrator business for older women, but it is not the main focus of the show by any means.
Two episodes have brief male rear nudity
Sex is often discussed in joking and serious conversations
A woman hires a prostitute and later tells her sister that "his penis had abs"
One kissing scene that lasts about a minute, not graphic at all.
In season 7 episode 5- Brianna and Mallory are meeting Barry's family, and there ends up showing a photo of Brianna lying naked on the bed, her arms covering her breasts and her legs open (but this is covered by Brianna, you do however see some of her breasts even though they're covered.) Only shown for a second or two, very comical scene.