"Pleeeease make me cum," I responded desperately.
"What do you think I am, a prostitute?" she said in a mocking tone. "This is just a massage, nothing more."
But still, her fingers wrapped around my steel cock and stroked it gently, bringing me maddeningly close to the edge but not going fast enough to set me off.
I was squirming around a bit and moaning like I was in great pain. I was right at the edge of cumming and she knew exactly how little to touch me to not let me explode. I was so desperate...
"Pleeease," I begged, and she smiled, letting go completely. I groaned again, loudly. One of her talented hands went to my nipple, pinching it and tweaking it softly, while the other cupped and squeezed, massaging my balls, keeping me horribly frustrated.
She didn't touch my cock for a full minute, letting me fall away from the edge without relief. She massaged my thighs and calves, but stayed away from my cock.
"Our time is running out," she said coyly, her hand finally lightly grabbing my aching cock. My eyes went wide and panicked as I realized she might send me away frustrated.
She stroked me fast, moving up and down my raging erection five times. Then she began stroking me very slowly, lightly rubbing my slippery cock very frustratingly. After five strokes of this, she gave me five more fast ones, then five more very slow and light ones. This treatment continued, five fast, and five slow, building me slowly towards orgasm. I was going out of my mind! The fast ones brought me closer, but the slow strokes kept me where I was. Just as soon as I started to really enjoy the fast strokes, they stopped and she was only lightly touching me, giggling at my predicament.
Finally, I was building for so long I was about to cum. There was no stopping it, even the slow strokes would set me over the edge. I was breathing very hard and was very frustrated. My cock was made of steel and her soft hands were evilly tormenting me.
Five fast strokes, and then the five slow strokes were even worse than before, so light she was barely touching me. The fast strokes never came, and I moaned loudly. She just kept touching me lightly as I was literally at the edge of cumming.
DING! rang a timer in the background. My masseuse giggled at me as I almost screamed from frustration. "Time's up!" she laughed.