"Of course"

"Of course, Dear."

The girl returns to her seat. Ms. Nanci proves to have endless stamina as her cock becomes rigid in my throat once again. As I begin sucking her cock once more, I hear her pull something out of her desk.

Suddenly, with a swift movement she pulls her cock out of my mouth and shoves a dildo back in before I could even make a sound. "Turn around, bend down, and stick your ass in the air. I'm taking you right here."

Out of fear of what she might do, I comply immediately, being as stealthy as possible as I carry out my orders. "God damnit. Dropped my pencil under my desk." As Ms. Nanci says this to the girl, she bends down and lines her cock up to my semi-loose entrance from Mrs. North's previous pummeling.

"Mmhhhmmm!" I moan surpeisingly softly as she burries herself all 15 inches deep, suddenly realising the reason for the dildo in my mouth.

She continues to pound my boypussy in a motion that made her look like she was repeatedly stretching for her pencil. My cum sprays all over the floor. When I look up for the first time, I realise that I can see the classroom from a 3.5 inch gap in the bottom of the desk.

I'm stunned to see there sitting in the chair, the girl who stayed after class aggressively stroking her 11 inch shaft. It surprises me even more when I see who the girl is. I must have not recognised the voice due to the sound of me sucking cock.

It was my little sister, Sarah! And she was looking right at me as Ms. Nanci unloads in my ass, filling me to the brim and enlarging the pool of cock milk under her desk, and continues to beat me like a cocksleeve.

Do I invite my sister over for extra fun...Or do I wait and see what she decides to do?