Turned into a Toy

I clicked the lock shut on the locker containing all my clothes and looked down at my now naked body. I was in very good shape for a fifty year old. I'd always been thin and now I was shaved from the ears down and all six feet of me looked smooth and toned. My cock was a bit tumescent, larger than average and some found this odd for a complete submissive and was often disappointed when I didn't let them play with it, but I preferred to be always aroused when I served others.
I placed a towel around my waist. There was an odd clicking sound behind me and a soft lilting voice spoke, "And whose little bitch are you?" Turning, I saw a petite woman, no more than thirty years old, dressed quite properly in a white dress blouse with the top buttons open, a skirt and medium heeled shoes. She had her hands on her hips and looked me up and down with a wry smile. She looked like the prim but sexy librarian you'd see in an old movie.

"No one's yet", I replied and stepped closer to her. What was she doing here in a gay sauna?
"Perhaps you could be mine", she said. She was several inches shorter than me even in heels. I looked down to her cleavage and could smell a subtle perfume.

"How would you treat your bitch?", I asked. My God, now I was flirting with her!
"You would wear a collar and accompany me on a leash. When I find a suitable stud I will breed you."
"But I'm very oral as well" I said archly, "I do like both at the same time."
"I will see to that as well", and quickly adjusting her skirt she said "My bitch may sometimes have this."
Her eyes left mine and glanced down. I lowered my gaze and beheld a beautifully erect seven inch cock! I couldn't take my eyes off it. Licking my lips and feeling a bit weak at the knees I said "You won't let me come, will you?"
"Of course not, dear", she said and gently stroked my face with her fingers.
Impulsively, and almost without volition I said "Alright, it's a deal."
She somehow produced a collar, black, two inches wide, and fastened it snugly around my neck. Then she attached a lead which fell to just below my knees.