He's only 11 years old, and he watches porn on my mom's computer whenever i'm out. I know this because he sometimes leaves videos on the desktop, and also, I walked in on him one time, and he quickly closed a window, and turned the computer around. I'm pretty sure he does this A LOT. I've tried to help him out by deleting videos and clearing the history, but I don't know if I should talk to him about it, or if I should tell my parents.