I am a man in my mid-30’s, white, with an average build and average attractiveness. I have a large dick. I have gone into a massage with a new masseuse named Kateri. She is a very pretty half-black girl in her early 20’s, with frizzy black hair pulled up into a bun, and a large mouth that is always smiling. She is 5’6", with the body of a yoga enthusiast and large, very perky breasts. She wears yoga tights and a loose tank top and sports bra. Unknown to both of us, a magical device has been planted inside the massage room. It causes those in the room to feel heightened desire. When I roll over halfway through the massage she briefly glimpses my naked dick. Tell in great detail with lots of dialogue. Tell in present tense.