For the next two days Monica became unavailable. She didn't want me to kiss her or hug her goodnight, as we were always in the habit of doing.
On the third morning, when I woke up, I went to the bathroom. I peed and walked over to the sink to wash myself. After washing my face, I straightened up and saw Monica behind me in the mirror.
"I hope you haven't had any fun lately without me?" she said to me standing very close behind me.
"You were so cold that I even shied away from masturbating" I replied.
I felt her hand on my penis.
"You're lying. You're standing there ready to cum."
"Every man erects in the morning, and it's not because you were cold and not sensitive," she added.
"So it's time for the lab sample. Put your hands on the sink and stand in a slight straddle" my girlfriend commanded.
"Do you remember the movie Road Trip?" I asked looking into her eyes in the mirror. "A bit like the scene with the prostate milking."
"Just I was getting a manicure yesterday and I'm not going to stick my pretty fingers up your ass!"
"So it won't be like the movie."
"It will be better," replied Monica. After that I felt something wet on my anus, and after a while my sphincter was being pushed apart by some large shape.
I cried out in pain and asked:
"What are you pushing into me?" I almost screamed and straightened up.
"Straddle and thrust, no time for fondling, you have to go to work soon!" growled Monica without stopping masturbating me.
The object in Monica's hand began to slide into my ass, and at the same time, while pushing against my prostate in my ass, Monica intensely massaged my cock. After only a few minutes I could feel the finale coming.
"I'm coming!" I choked out a moment before ejaculating.
She disappeared behind me in the mirror and after a moment I felt my penis in something warm and moist. I looked down and saw Monica. She was kneeling, holding my cum-spurting cock in her mouth and embracing it with her lips. All the time I felt a strong pressure on my prostate.
After several seconds, the waves of spasms from ejaculation passed. Monica stood in front of me. Only now did I see that she was wearing a black lace nightgown. Looking into my eyes she smiled and opened her mouth. She slid out her tongue lightly coated with my semen. The cum flowed out of her mouth and then stained the skin on her chest and her pyjamas.
"I think you've got something stuck up your ass," she said and licked her lips. "Now it's time to wash up and get to work."
While at work I sent a message to Monica: "Very cool wake-up call, thank you."
After a while I got a reply: "If you ever use my toy without permission again, you'll have to do the hand job for the rest of our days together."
I was surprised. "After all, you put it up my ass yourself."
And she replied: "But there's a video on the computer of you riding my toy!"