Here's a fairly out there suggestion. Have you tried pointing out how child-like we become during vanilla sex? Most of us want to put something in our mouths at some point during a love-making session. i.e we become more interested in our sense of touch. Much like infants & young children. I don't know about you, but my partner & I don't tend to talk a lot in the heat of the moment, and when we do talk it's usually in simple sentences. for more on how child-like we become during sex, have a look at what Sigmund Freud has to say on the subject. Just take it with a grain of salt.