In her Pussy

I unzip my pants and expose my throbbing member to the girls. Mira grinned and turned to Sandra, "Watch how he does it, sweetie. Then you can do me the same way with the strapon back home."
Sandra nodded, smiling at the fact she'd do the same to her lover afterwards.
I grabbed Mira's hips and thrust into her; I left the speculum in.
Her breasts bounced in time with my thrusts as I rammed her pussy again and again.
"Oooooh, yes....YES...harder, please harder Doc...I feels so good....AH! AH! Harder....pound my pussy to pulp!"
I began to pick up speed, pounding her again and again. Her moans became more intense...I then pull out before climaxing on her stomach.
"You're good...Miss Mira." I pant.
Sandra looked inside Mira again. "Wow...your womb is open and pulsing . But I can't see inside it..."
"We'll do that...another time." Mira explains.
I remove the speculum and clean it as Sandra gets on the chair next. I choose a medium sized one and I see her pussy is wet. She cringes as I insert it and open her up. Her ripe cherry stared back at me.
"You're very healthy, Miss Sandra." I say.
"Umm...Doctor? Could you..."
"Yes?"
"Could you...let me see what I look like? In there?"
I smile and hold up a mirror.
"It's not as pretty as yours Mira." She says.
Mira gives her a kiss. "You're beautiful Sands."
She blushes.
Mira turns to me. "I have an idea...let's have the Doc pop your cherry."
"You want me to-!?"
"Hey, you'll do it professional right? That way it'll be done right."
I look at Sandra. Her eyes full of shock and pleading. "Is that what you want Sandra?"
A few seconds pass, then she nods.
I reach in and pop her cherry with my finger. She bites her lip and I clean her out with water before she asks, "Do me like you did Mira."
"You sure, hun?" Mira asked.
"Yes. I-I want to know how you feel...so I can do you right."
I look at Mira and she gives me the 'ok'.