I remember in nursery school, this boy used to play some game where he would tie me to the bookcase. I resisted, of course, but secretly loved that game. My friends and I would tie each other to chairs in the basement and see how well caught we could ge each other. We were maybe 8 at the time.
And movies, TV, books containing someone torturing someone, especially whipping, or tying them up, were very very interesting. Tingle in the blood interesting. Not even hit puberty, this was interesting.
So here I am.