I used to fantasize about me and my brothers or friends from school being held captive by pirates or terrorists, and, being the only girl, being chosen as the one to be tortured in order to extract from us information about treasure or such.
In my fantasies, I would never volunteered but did not struggle much either. I imagined myself enduring floggings, dunkings, suspension, crucifixion, keelhauling and all maner of torture with nary a whimper.
I was a very well read child, and even though I did not get my hands on a copy of "The Story of O" until age 14, I had smuggled "My secret garden" and "The Hite Report" out of the public library by age seven or eight. Only when I got older (11 or 12) did a religious or sexual theme enter my fantasies.