I have had a couple.
The first involved an online dom who instucted me to get an erection and then lay in a cold bath full of ice cubes, hat was not very pleasant.
The second was when I found a woman via the net. She was a hard up student. I was ordered to drive the hour it took to get to her house. I was dressed but ordered to be pantless. When I arrived, she opened the door, looked down at my trousers and the first thing she said was 'Show me!'
I had to drop my pants on the doorstep in public view and then she just laughed at my prick. I was ordered inside and told to strip naked in front of this younger, complete stranger.
She made me sit on the bed whilst she removed her trousers. Then she found a thong in the drawer and ordered me to put it on. She then stood up, wlaked past me, slapped my face and went to the bathroom. She dropped her pants and made me masterbate to get a hard on whilst she pissed. I was so nervous Iwas strugling to get an erection at all which just made her laugh. She then put her fingers to her pussy and then flicked wee straight into my near naked body which caught me off guard.
I was then ordered back to the roomand told to wank whilst she sat watching tv. Occassionally she looked at my dick, told me it was pathetic and laughed. When I was ready to cum I had to ask permissionand was told to come in my hand, which I did. I have never wanked on front of any woan before so to do it in front of a strange one was weird, it was huniliating and erotic at the same time. I was then ordered to lick it off my hands. I really didnt want to and told her this, so she stood up, yanked my hair back and spat in my mouth. It was disgusting and degrading. After slapping my face again, she grabbed my cock and dug her ails in shouting 'Drink it' soI licked my fingers clean. It was cold and salty and gross. I was then ordered to drop my (her) pants, told to dress and 'fuck off pussy'. I walked to the door of her flat, opened it into the main porch where several of her friends were waiting for me to leave and I left. I have NEVER felt such emotions, excitement, humiliation, degradation etc.
PArt of me wants to forget the experience but part of me wants to repeat it.