Is this Natural for a boy? 14 M

[BruhSki47]

It was Me and my sister at home with my parents gone to a dinner party for the night, I woke from a sleep due to a sports game and went to go to the kitchen to get a drink. But in just normal, i flicked my head to see if my sister was in her room. Her door was cracked and she was, but she was masterbating to photos and videos. She had earphones in so I guess I couldn't hear. She was facing my direction but focused at the laptop, and wall. I got a bonor and could't bear start masterbating outside of her door watching her. It isn't Incest but I just never seen in person another person masterbate, my sister is hot, and going through puberty. I stopped halfway through and left and finished somewhere else.

Is this natural for a 14 year old guy going through puberty? I just couldn't think and an urge to masturbate started... :what: :what: :what: :what:

Has this ever happened to you?

[Emerald Dream]

This is nothing but storytelling, and looking for more storytelling. :locked: