He knew someone was watching when he heard her gasp. He opened his eyes to see Denise Fuller, his best friend's mother, staring with her hand covering her mouth. His hand stopped moving on his hard cock. They made eye contact, and he froze in terror. "I--" she began, her eyes returning to his cock. Then she turned and left the room without another word. He felt panic spread through him as he yanked up his underwear and tried to figure out what to do.