Kasey Warner is a sexologist which is basically the same thing as a sex nerd. She has a bush on her pussy and she came to Ken for a hard fucking. Ken wants her to flash in public and thinks it has something to do with his sexual psychology. Although she knows a lot about sex she has no idea what he's talking about, so instead of trying to explain to him that he's a pervert she simply complies and starts stripping in the middle of the road. Because she is an expert of sex knowledge she obviously has to put her theories to practice in the hotel room with Ken. He fucks her missionary, and then has her ride him, and as a bonus lesson they experiment by letting Ken cum all up on her bush.