I lean back and place my hands on the desk behind me, but push my hips forward. I clench my buttocks tightly making all the blood engorge my fat cock. As your tongue begins to explore my foreskin I become as hard as steel. My huge bulbous head becomes larger than my skin can contain and it is not long before my head is completely exposed. My foreskin is a tight due to my overly thick head that it feels like your are encasing your own lips tightly around it, so the sensation that you are working my head with your tongue is doubly erotic to me. My precum begins to flow amply and soon runs down my shaft and hangs at the base of my balls