Saucy Sketch Thursday #152 (Patreon)

They stroked their cock slowly, palm slick with sweat and lube. Their mistress watched the motion intently, bent forward with her elbows on her knees. If she sensed her sub was getting too close, she nudged their knee with the toe of her heel, and they knew to take their hand off for several excruciating seconds until the moment had passed.