I get excited by numbers, formulas, and my teacher's cock. My student, an intelligent top student in science, has a hidden side as a perverted handjob addict who loves middle-aged cocks. In a situation where I can't make a sound, my cock is exposed and handjobbed on my face, cumming over and over again from the intense humiliation! She jerks me off until I'm dry, whispering and teasing me to the edge before finally making me cum! My teacher's cock is so satisfying to jerk off...