About a week ago, I visited a domme named Mistress Tanya. She wanted to use me to train her apprentice domme, Sara. When I arrived they took me to a room in her house retrofitted to be a dungeon. They had me strip in front of them before they took turns inspecting my body. Mistress Tanya placed clothespins on my balls and clover clamps on my nipples then tied me to a wooden cross facing the wall She used a flogger to whip my ass, back, and thighs speaking to Sara the entire about form and technique. Sara wanted to give it a shot, so she spent some time whipping me also. Every now and then while she whipped me, Mistress Tanya would send a flogger strike between my legs at the clamps on my balls. They continued whipping until she was able to knock one of the clothespins off, then they untied me and retied me to the cross with my back against the wall.

Though I knew I was at their mercy in either position, for some reason I felt much more exposed this way. Sara seemed to be having a good time. She kept her face close to mine looking into my eyes while she pulled on the clamps on my nipples. She didn't pull hard enough to take them off, just hard enough to make them really hurt. She smiled while I grimaced. Sara then used a cane on my thighs while Mistress Tanya floggered my front. I had some cane stripes on my thighs for a few days. 

They asked how my nipples were doing. I told them the clamps were really making my nipples ache. They each took hold of one clamp and pulled slowly. I moved my chest forward as far as the ropes would let me trying to reduce the tension of the clamps, but they kept pulling. Painfully, the clamps slipped off. They each took a nipple and alternated between massaging and squeezing/twisting them. This hurt more than the clamps.

When they had finished with my nipples, they moved down to my balls. Mistress Tanya held my balls lightly in her hand while she spoke to Sara. She told Sara to always remember that if you can control a boy's balls you can control the boy. She looked to me and asked if she was right. Just as the words left her mouth, she squeezed firmly. I let out a hasty "Yes Ma'am." She smiled at my confirmation. They took turns squeezing, flicking, and pulling my balls. Instinctively, I tried to close my legs, but they were tied wide open. They definitely seemed to enjoy my futile attempts to protect myself. More than once I heard something to the effect of "that's right close your legs little girl. Keep 'em shut." My eyes were almost watering at this point from the pain to my balls. 

They offered me a choice, either they could keep flicking my balls or they could tie my over a spanking bench and Sara could learn to give a proper caning. I chose the caning. Once they had me secured over the bench, Mistress Tanya delivered the first stroke. It cam hard and fast across my ass. She gave me around 20 in total, taking her time with each one. Sara watched with an intimidating curiosity. She looked like she wanted to be taking notes. When she finally got her turn, she was practically giddy. Her first strike was the hardest cane stroke I had received to that point, but her next thirty or so were no better. I say thirty or so, because I lost track. All I know is that at a certain point Mistress Tanya wanted to move on. Sara seemed genuinely disappointed that she hadn't been able to make me cry.

I was switched into a tight hogtie, with a parachute leash tied to my balls. Mistress Tanya stepped out of heels and stood over me. She placed one foot on the side of my head squeezing it into the ground. She told me to beg her to let me worship her feet. I did, though apparently I didn't do a good enough job. She had Sara pull on my leash crushing my balls. I pleaded much harder to lick her toes. I eventually got to worship each of their feet. They left me hogtied while they went out to smoke and go over any questions Sara had.

Overall it was a good time. The marks I had were all over my body and lasted several days.