Now it’s time to engage in some headplay. Grasp his shaft with one hand and use the fingertips on your other hand to run lightly all over the head of his penis. Pay careful attention to the reaction you receive when you touch the cleft on the underside of the head of his cock.
Say: “Sometimes I like to vary the sensation by tickling the head of your cock. It provides just enough friction to keep you hard, but not enough to make you cum.”