As the title suggests, what has been your most extreme domination session?

Mine: Whilst I wouldn't consider the act as not being all too extreme , the manner in which it was carried out left me genuinely rattled mid session. The session began with some light face slapping (which became harder as the session progressed), face spitting, deep throating and choking on a giant cock. All good, no problems.

After this, I was handcuffed, bent over the bed, and flogged. This started off lightly but soon it got heavier and heavier. At one point I asked her to stop as it became all too much. She did, but only for a few seconds, and she began again. A bit concerning

After this, I was told to lay down on the bed. I was blindfolded and both my hands and legs were tied and suspended to a harness above the bed. An assortment of different dildos were inserted in my ass, starting off small, but soon she broke out the big guns. One dildo in particular caused considerable pain, which I voiced to her, but she kept going. Having no escape, unable to see, and her refusal to stop, left me seriously panicked. Complaints were met with a slap to the face. Needless to say, it was a good thing I'd only booked a 1 hour session