A good smack on the ass.
It's true in my experience. From the liberated fembots to the ticas.. they ALL appreciate a good shmack on the ass once you really get 'em going.
Sure some are into various higher degrees of play and other fetishes, but this one seems universal.
Something about the dr. sparky thread caused me to think that maybe the reason reason kink/bdsm, etc is so popular is because at least in it's mildest form (spanking) all women like it. I wonder if it's instinctive. like in that thread by the bahavioral analyst where he was able to explain the reasons for our instinctive behavior. I wonder what he'd say about spanking.