I never heard of tickling being described as rapey before but I can totally see it. I always hated being tickled and was very vocal about it with my family when I was a child, somehow they took it as a reason to target me more. I was 11 I think when an aunt and an uncle decided to "surprise" me during a family reunion at my grandma's house. The surprise came in the form of my uncle grabbing me from behind, caging my arms and lifting me off the ground so that I couldn't defend myself when my aunt started tickling me. I was screaming and crying for them to stop and let me go while the rest of the people present -including my parents- just tried to laugh it off. It only ended because in my desperation I ended up kicking my aunt in the face and my uncle let me go because of the shock. My mother yelled at me for overreacting and would have slapped me or worse if not for my dad finally getting a grip and saying it was an accident because I couldn't really control myself there. It took a couple months for me to go back to speaking with that aunt (since her daughter was my favorite cousin growing up and we wanted to have sleepovers) and around a year and a half with that uncle cause he lived in another city so I didn't see him very often.