Hot waxing
BDSM idea by Magnuz Binder.
You lie on your back on the plastic sheet in bed, spread wide and folded double by your wrist and ankle on each side being stretched out and tied to the same bedpost on each side of the bed. I gently part you already parted labia even more and gently scopes up some juices from your vaginal opening and massages it onto your clit, until you're panting and moaning from excitement. Then I light the first candle, tilts it and starts dripping the melted wax down on your wide-open pussy.
I spread you wide with my fingers, making sure the wax find every surface and fold of your pussy, even seeping into your ajar vagina, building a wax shield covering your vulva, but time after time flicking it off from your clit, exposing it to new drips of warm wax. You cum the third time I let the warm drops hit your clit, and again when I flick the shield off from it after the fourth time. After that, there is no way of distinguishing your individual orgasms any longer, since you thrash and writhe wildly and constantly, regardless of where the warm drops hit your pussy.