In the sterile, clinical environment, the twink's heart races as he contemplates the daunting task ahead. The doctor, seasoned in breaking in virgin asses and throats, guides the twink's head, pushing his cock deeper with each thrust. The twink gags, tears streaming down his face, but the doctor's encouraging words and the promise of a full, hard fuck keep him going. The twink's mouth stretches wide, his jaw aching, as he takes the black cock deeper than he thought possible, gagging and slobbering, eager to prove his worth and ready for the next step - a rough, deep pounding.