The brunette came for a massage not only for the purpose of stretching muscles. Such chicks also have fantasies about massage therapists. The piercings on the intimate parts of the body even to me speaks volumes. That she is not indifferent to sexual pleasures is clear at once. And how her body reacts to the touch of a hand - an experienced masseur will understand at once. So to stick it in her mouth is a matter of time and the degree of arousal, which this male skillfully manipulated. Another chick got on his sex list.
If I were my professors, I would recruit more of these beautiful, and most importantly, stupid students to study. The test in the classroom was very effective.