hmm well my first bdsm experience was when me and my then bf got into a fight. i was fourteen and he was 18. both leos, so needless to say alot of yelling and stomping around was involved. he said something like, " if you were a guy, i'd hit you!" and me, being the little brat i was at the time,shouted back," go ahead i fucking dare you!" (of course now....i would never do such a thing. i like to think i've got my inner brat pretty well under control, lol.)
needless say he slapped me pretty hard across the face......and after i got over the intentional shock i jumped him right then and there in his parents dining room.
that coupled with other things....like always wanting to be kidnapped in the war games i use to play with my cousins as kids....always finding the rape scenes in movies a big turn on, rather than tragic.... being raised to become the traditional housewife/trophy wife.
i didn't know it was bdsm until about a year ago when i discovered this whole community. and i started talking and exploring, mostly online, and realized just how much i was into it.