i think it started with me when i was young when two things happened. one: a super cute boy who i secretly had a crush on ticked me until i couldn't breathe. it totally turned me on and if i wasn't 12 years old, i probably would have submitted to him right then. and two: when i was about 15 i found myself in enclosed, dark spaces with random boys (like closets, crawl-spaces, etc) and the pitch-blackness of it all got me so horny, i could barely control myself. i really loved the sensation of 1) not being able to see the person who was inches away from me and 2) not knowing what they would do to me because i couldn't see it coming. the slightest touch or kiss or spank in that pitch-blackness really, really turns me on.
i've been tied up, spanked, handcuffed, blindfolded, hogtied, whipped, held down, etc...but nothing gets me as hot as either being tickled or being forced into a dark, cramped closet or other place where i have no idea what's going to happen to me.
now, 20 years later, i find myself wanting to play out these scenarios again. my husband isn't into it, but we're in an open relationship, so i tend to seek out Dom guys who are more than willing to lock me in a closet or tickle me until i squirt.