So... my story- my brother... I'll try not to go into too much detail in case it's upsetting, but basically OP, your 'bathroom' post (along with the first few replies) we're such a massive part of my daily life. It really hit me hard when reading it.
Holes drilled in the walls, hanging around the door as he would stick a mirror under the door to see me, and hiding behind the shower curtain... omg, I swear he would spend half his life behind that shower curtain, just waiting to be 'accidentally' shut in the bathroom with me. I think i was in my mid 20s before I stopped checking behind shower curtains and bathroom doors, even though I had moved out, it was just such an ingrained habit.
The constant accidental touching when walking past each other, which was always, in a tiny old house.
The constant exposing of himself, usually erect. Always lurking in corners silently, waiting for his "oops!" moment.
We shared a bedroom, so every single night he would silently gesture to get my attention so I could look at him masturbating. My other brother also shared the room, but he still got away with this every single day.
The physical contact in my sleep, or 'sleep', I won't go into detail, but there's a reason it took me in to my 30's to be able to sleep without a thick quilt all over me (even in summer), as a shield to hide the shape of my body, and to make some parts unreachable. I was so scared, and such a quiet little girl, that I never said anything, I would just pretend to be asleep but I would 'stir', as that would scare him off for a few minutes.
The whispering. God the whispering. It was incessant, and would really scare me. About all the things 'we' could do. And always "it's ok, we won't tell anyone", and "it's ok, we can use condoms". Like did he seriously expect me to turn around and say "yeah sounds great, let's go"??
Porn being left around constantly.
Piggy back rides, him teaching me to ride my bike, playing around on a furniture trolley... yeah, you can imagine, or don't, coz it's fucking disgusting.
I remember being with my girl cousin who was only a year or two younger than me, it was when i was really young (and tiny!), but she wanted someone to give her a piggy back ride. I was so protective of every little girl near him, so I said I'd give her piggy back rides. Being little, she wanted them over and over again. My legs were exhausted, but I couldn't let HIM take over, so I continued, until my legs literally collapsed and we both went head first into a brick wall. But that's how overprotective I was, even as a tiny kid.
I can't actually ever remember this not being a part of my life, so I don't actually know how old I was when it started. And it continued until I was an older teenager, almost adulthood actually.
I can't believe how many people have posted here of similar experiences. Fucking disgusting. I'm so sorry to read of all you've gone through.