i was just watching some porn, with speakers on thinking nobody was home.. then I realised my brother was still here down the corridor.
The door was closed, and he appears to be sleeping but now I'm paranoid he'll have heard it.. and well, that'd be pretty awkward.
lol! Headphones, always...
And you've always got the excuse that there was this website that popped up with popup ads all over the place, that you couldn't close. (Assuming you didn't have it cranked up, with oohs & aahs filling the house(!)) Bring it up later, like, "boy, I had some weird stuff on my computer today, like, some strange websites popping up that I couldn't stop!
I've used the pop-up excuse a few times before myself.
Ah, my younger days~
PROTIP: Your brother watches porn too.
You're fine as long as you didn't have SWAP blaring throughout the house. No need to make a very awkward situation by talking about it, just bit more paranoid next time and think what would of happened if your parents were there. Now that would be awkward.