They walked in to the room and let the door close behind them, finally alone. Instantly they were in each other's arms, kissing hungrily. Suddenly she broke the kiss,
"Easy now pet, plenty of time for that. I'm going to go and change, why don't you undress for me". With a smile she walked in the bathroom.
When she came out the boy was naked, blushing as she saw him in the flesh for the first time. She was wearing an almost sheer lace top, her breasts straining at the fabric, and a pair of lacy knickers, the material clinging to the shape of her womanhood. They both gazed at each other lustfully for a moment, his cock already twitching, her lips slowly moistening.
"On the bed, and assume karta for me pet" she commanded.
He climbed on to the mattress, and took the position, leaning forward on to his arms, arching his bottom up. His legs nicely spread, his most intimate parts were left open to her gaze.
"There's a good obedient pet" she said, resting her had on his head, running it up his spine, and pausing at the cleft of his buttocks.
"We're going to start with an inspection. You're offering me your body, and we have to make sure it is worthy. You certainly look fit and healthy. Good firm buttocks," she continued as she squeezed his bottom in her hand, before placing her fingertips between the firm globes.
"What a pretty anus you have pet" she said, tracing a finger around the rim of the crinkled opening, causing him to moan softly. She ran the finger down over his perineum, noticing how sensitive both it and his anus were to her touch.
She took his scrotum in her hand, squeezing gently, rolling his testicles between her thumb and finger, stretching the sac out.
"All seems very healthy pet" she said to him, as her hand continued its downward journey, fingertips running down the underside of his already stiffening cock.
She smiled to herself, pleased that this young subbie's near constant arousal was entirely down to her. Wrapping her hand around his shaft she expertly began to masturbate him, leaving him fully erect in seconds.
"Mmm... you are a nice size pet, Mistress is very pleased."
"Thank you Mistress," the boy replied, blushing at the praise, and his exposure.
"Later you'll show me how tight your body gets as you cum" she told him, continuing to slowly stroke his stiff cock, "but you can't cum just yet pet. You must earn your cums by being a good little boy, and pleasing your Mistress. You do want to please your Mistress don't you?"
"Yes Mistress" he breathed, "I live to serve and please you."
"Good boy, such a good boy" she praised him, slowly masturbating him until she could hear his breathing become heavier and little whimpers of pleasure could be heard, before abruptly stopping, leaving his erection hanging between his spread thighs, the tip shiny with pre-cum. Rising up from the bed and walking to the dresser she spoke back over her shoulder;
"Reach behind yourself for me my love, and spread that beautiful bottom of yours nice and wide. I want to see your hole open for me."
At the dresser, she opened a pot of her favourite lube, liberally coating two fingers with it. Turning back to the boy, she observed with a smile that he had done as she commanded, his hands pulling his buttocks apart, with the result that the crinkled pink opening between them was wide open on display.
Returning to the bed, she knelt behind him, admiring him for a second. Grinning to herself wickedly, she leant down and kissed him between his spread cheeks, her tongue darting out to press past the rim of his anus.
"Oh Mistress" he cried out.
Chuckling, she ran her tongue up his perineum across his hole.
