A lanky, smooth-skinned boy, clad in nothing but a pair of form-fitting, light blue underwear, stands before the full-length mirror in his room. His eyes, filled with curiosity and desire, travel over his reflection, taking in the changes puberty has wrought. He reaches out a tentative hand, running it over his chest, feeling the soft down of hair that's beginning to sprout. His hand dips lower, hooking into the waistband of his briefs, pulling them down to reveal his hardening cock. He wraps his fingers around it, a gasp escaping his lips as he starts to stroke, his hips moving in rhythm with his hand.