Full insertion

I feel my pants and panties slide down my legs as I crawl up John's body. They pull completely off, revealing my pussy covered by a stringy patch of red hair and my ass fully exposed. Ashley stares at me for a few seconds, her jaw dropping. She looks completely shocked and confused, not knowing what to do. The observant in the class might have noticed the snail trail of arousal I was leaving on the floor as I crawled over John.

I wrap my arms around his waist, squeezing tightly with my face buried in his neck. He continues to thrust against the floor, his body trembling. I feel his balls tightening up again; he's close! I wrap my arms around him, trying my best to push him down on the floor until I can position his cock correctly. His cock is throbbing furiously in my hands, my eyes closed as I press it against my opening. "Oh god," I moan, my legs shaking from the anticipation of him filling me with his massive cock.

"What are you doing?" Ashley screams. She grabs my arms, trying to pull me away. John is still bucking against the floor, my hands holding him still. Ashley pulls at my arms with both hands, but I managed to fight her off. I knew that hiding his orgasm was a losing proposition, but as my mom always told me "If you see someone being laughed at, all you need to do is to turn it into a situation where they laugh with them."

I'm sure in this situation, she'd say "If you see someone cumming, all you need to do is to turn it into a situation where you cum with them."... No, nevermind, she'd probably faint if she saw me doing this.

After a few failed attempts to get his cock inside me, I got the head lodged perfectly in my hole. One inch at a time, I pushed back onto him as hard as I could, making his entire cock disappear inside of me. I held it there, waiting for him to stop thrusting... And then I started to scream.

"Oh fuck! Oh god, YES!"

I felt his cock pulse within me, sending a surge of pleasure throughout my entire body. My pussy spasms around his dick as he cums in me, pouring his hot load deep inside of my body. "Nngghhh! Nnnghhhhhh! Fuck!" I screamed, gripping onto John's hips tightly as my own orgasm wracked my body. My pussy felt so warm and wet as I felt John's cum flooding me; I couldn't help myself from moaning loudly as he filled my pussy with his cum! The rest of the students were laughing at me, but I didn't care!

I was honest-to-god drooling as I felt his cum gush inside me, feeling every shot of hot cum squishing against my insides. My eyes fluttered open as John came inside me, his cock twitching in my cunt one final time before he finally finished. My pussy spasmed with aftershocks as I came down from my orgasm, releasing John's cock from my body; his cum poured out of my pussy like a river out of a broken dam.

I noticed he was still hard, his cock a deeper shade of red (and white) than before. I couldn't help myself as I turned around to face the crowd of students as I shoved it back inside me, this time making sure to commit all the expressions of the class to memory. They all stared back at me with wide open mouths, their jaws hanging down in disbelief. Ashley genuinely looked like she would cry right now, staring at the giant mess she caused in gym class.

"I can't believe you did that! Are you crazy?! Did you just make yourself cum?" Ashley asks me angrily. "Look at you, your pussy is dripping with cum! Did you just cum? With your best friend's cum still inside you?!" She looks around at the other students, all of them frozen in shock. She looked hilarious, red faced and spitting as she glares at me with tears in her eyes. "You little slut! You fucked your friend! You fucked him right here in front of us!" She points at my crotch as if I were trying to hide it. "And look at your pussy! Your pussy is still covered in his cum!"

Did she have some sort of crush on John? Or did she want him under his thumb so badly that she had to fuck him to achieve her goal? Either way, she was in no position to criticize me, as her own crotch was oozing out a thick stream of fluid that ran right up to her pants leg.

Tammy was the only one who showed any reaction. She smiled and winked at me as I looked down at my pussy, realizing my juices were smeared all up along my slit. I looked back up at my classmates, most of whom were staring openly at my gaping, cum-filled pussy. Even Chloe just stood there, staring at me, her mouth hanging open with her teeth showing.

I couldn't take it anymore. I came again, this time before John did; I let out an involuntary scream. The sensation of John's cum filling me and the class' stares made me cum with such ferocity. My pussy clenched around John's cock as he came inside, and I felt a large amount of his cum squish its way back out through my pussy in another gush of my own cum. It was like a challenge to see if it would end with John's cum inside me, or my orgasm squirting it all out onto his balls and the floor.

It was over. John's huge cock slowly deflated in my pussy, the thick seed slowly oozing out of my pussy and onto the floor. All that remained were a few drops of cum at the base of his penis, as well as a thin layer coating my inner walls. I was still cumming, my pussy spasming around him as the two of us lay on the floor of gym class, both of our breathing heavy and panting in pleasure.

Coach Preda snapped out of her own orgasmic grinding and stood up. I had no strength left in my legs, so I kept sitting in John's lap as he came to. Seeing me on his lap, clearly leaking with cum must have been surprising for him. He was still inside me, though I could tell it would be impossible to get anything else in me with how loose my pussy felt.

"S-Shannon?" he said, a bit shocked at first. Then he looked down and saw the mess he made of my pussy. "Oh god..."

"Heeey, John..." I said, smiling at him in between my gasps of air.