Peanut butter, unless very creamy, will make the job harder licking it off the sides of your labia. Who the hell would spread that around their vagina's opening anyway. I prefer dipping my finger into the PB and making you lick it clean while you look me in the eyes. It's a mutual play, of course. Maybe some J to accompany it too. Dried out PB on the skin wouldn't feel nice at all.