Caught by little brother, what should I do? (Unpleasant)?

I'm W17 I'm a bit uncomfortable and I actually thought that this would never ask such a question but it happened to me that I satisfied myself with my ps4 controller (because it vibrates) but now my little one has me Brother (9) "caught" in the process, so he just came in and I said he should leave immediately "because I'm changing clothes" (had little or nothing on). Do you think he noticed what I was doing? Should I talk to him again so that it remains our secret? I'm afraid that he will tell our parents without knowing / or fully knowing what he is talking about. It's just so weird. Serious answers would be nice. Thank you (the question has been occupying me all evening)

I don't think he's checking.

You probably know him better than we do, but such little boys always like to do the opposite of what they are told. So maybe not discuss it much.

But, even if he tells whom, not much happens.

Hardly anyone is surprised at pubescent teenagers masturbating.

Do not stress yourself

Thank you, I think you're right. It's just weird but well

Thank you

Don't think he's checking it out. Perhaps you should speak to him that he should knock in the future as you change so that he has that present in mind

Yeah, I've already thought about that. Unfortunately I can't lock my door.

Then just put a blanket over you

That is also a possibility

Don't think he noticed, unless he listened when you were loud but if not then he won't understand yet.

Okayy but was quiet

Then he won't have noticed. Do not worry.

Okay thanks, good night