Tim arrived to his human anatomy lecture with a big smile, it was after all, his favorite class. Not because of the material, but because of his beautiful lab partner. Why Jane was studying human anatomy he had no idea, she easily could be a model. Jane was a stunning woman, she had long curly blonde hair, piercing blue eyes, soft pouty lips, beautiful big breasts, and a figure any athlete would kill for. Her breasts had made many deposits into his spank bank over the semester, something he had sheepishly admitted too when she caught him staring at her cleavage, which to his surprise she had only giggled about. Not to mention the very fit and attractive professor, she had a very toned body with more modest curves, but was a very fine woman indeed. 

“Alright class, today’s lesson is going to be on the male reproductive organ” Ms. cox began. “We are going to learn all about it through inspection of the penis as well as a full penec-“ 

Just then his partner Jane sat next to him wearing a very tight and low cut sweater, causing his focus to deviate one hundred percent away from the lecture and onto her immense cleavage. The way they lightly bounced and jiggled when she shifted in her seat was hypnotic. All he imagined doing was sticking his hard cock in between her big boobs and pumping away until his balls were drained of cum. 

“Do I have any volunteers for the penile demonstration?” Ms. Cox called out calmly.

“Did she just say a demonstration? This is my chance for Jane to play with my cock, once she sees my big size maybe we can be partners with benefits.” Tim thought to himself excitedly.

His hand quickly shot up, although he wondered why non of the other guys in the class wanted to volunteer. “Those guys don’t know what they’re missing” he chuckled to himself. Just then Ms. Cox called on him and had Jane accompany him to the table at the front of the room. Janes breasts bounced fascinatingly in her sweater as they walked down the steps to the front, causing his manhood to swell. 

Ms. Cox instructed him to lie down on the table and handed him a waiver to sign saying “as soon as you sign these forms, Jane can begin the hands on demonstration with your penis.” 

That was all she had to say to get him to quickly sign and unbuckle his pants. Jane pulled down his pants, gasping as she did so at the size of the erect member springing upright and free towards her. 

“Wow if I’d have known how blessed you were, we would have been having a lot more fun this semester.” She giggled as she began gently fondling his manhood. 

His cock throbbed at this and he knew even in front of the class, his orgasm wasn’t far off. He was about to remind her that they could still have a lot of fun the rest of the semester when Jane leaned in whispering in his ear “If I’d known about that snake in your trousers sooner, I’d have invited you to come to my empty house tonight. I’d have sucked your dick and we’d have fucked in every position until you were out of cum. I guess I’ll have to find someone else for that after the penectomy.” 

Surely his ears had deceived him. 
“Penectomy?! I thought this was just to demonstrate a healthy orgasm and ejaculation. I revoke my consent for this demonstration!” He practically yelled. 

“Boys, boys, boys. Always so afraid of losing their silly penises. You’ve already signed the waiver agreeing to this. You’re still going to have your testicles, just not that senseless erection. I mean as we’ve learned, they are hardly essential for reproduction if we leave the testis intact. So what is it even good for?” She spoke peacefully, not expecting either partner to answer her rhetorical question. 

Ms. Cox just continued on, pointing out the various functions and proper terms of his manhood to the class. 

Jane answered the question anyway with a giggle and smirk “I know he really likes to use it to masturbate thinking about these” as she leaned towards him gesturing to her breasts, all the while, still rubbing her hands all over his throbbing manhood.

“He’s going to need a new activity after today!” 
“Hopefully he has another toy to play with, he won’t be playing with that one again!”
“He’s sure going to have less fun thinking about your big boobies Jane!” A few sorority sisters quipped in the front row before being shot a quelling look by the professor. 

So many mixed thoughts ran through Tim’s head. He just accidentally signed away his cock, his most precious part, for a chance at the pleasure he would’ve had with Jane had he just simply not raised his hand. Her gentile manipulations of his manhood, turned to full on stroking of his cock. He let out a groan of pleasure as even with his doomed situation he still wanted to cum all over janes bountiful cleavage in her tight sweater. Her movements felt heavenly on his cock as she stroked and twisted her hands around it. If he was going to lose his prized possession at least he would get the best orgasm of his life first. Only a few more strokes was all it would take he knew, and he’d be busting so much cum he may completely cover and suffocate Jane. 

Just then his hips bucked and his body made it known that he needed to cum right now. This caught the attention of Ms. Cox, who stopped speaking and walked over to Jane who was only a stroke or two away from giving Tim the best and biggest orgasm of his life. 

She reached out and gently removed Janes hands from Tim’s cock, much to his shock and dismay as he was right on the edge of pleasure filled paradise. 

“Now Jane, the semen part of our lecture is next week. We don’t need to be skipping ahead by having him erupt a geyser of cum. He is not to receive an orgasm today so no more caressing of his manhood, it’s time for the penectomy demonstration” Said Ms. Cox

“Ms. Cox, surely we could also cover the ejaculate lesson today too.” Tim said desperately hoping to obtain the orgasm he was so urgently close to achieving. 

“Not a chance, if you wanted to be the demonstrator for the semen and orgasm portion of the lecture, you should’ve waited to volunteer” Ms. Cox replied sternly. 

Jane just shrugged nonchalantly at Tim as his eyes pleaded for her to take pity on him one last time as a fully functioning male. His hopes for a last orgasm were quickly dashed when he saw Ms. Cox bring out the surgical equipment. He had been so close to experiencing the most pleasure he’d ever felt, then it was taken away only for him to experience the worst moment of his life. A moment he’d accidentally gotten himself into by thinking with the wrong head. 

“Jane, you may carry out the procedure while I address the class on what you’re doing.” Spoke the professor. 

Tim was tearing up as Jane stood by his still dangerously on edge cock with a scalpel in hand. He quietly begged her not to go through with it, reminding her they could still have lots of fun together if he was left intact, but she just apologized and said she needed an A. With that she began chopping down his tree trunk. He cried as he watched her sever his pride and joy at the base, while his professor spoke about it like it was nothing. After just a moment of slicing, there was nothing but a big pair of balls between his legs. Where there was a proud prick standing tall just a moment ago, there was now just flat skin. 

“Let’s thank Time and Jane for that wonderful demonstration” Ms. Cox called out 

Jane patched him up and pulled up his pants, buckling them. Pants that looked very different without the usual bulge in the front. He couldn’t help but stare hungrily at Janes cleavage as she had patched him up. realizing the achingly painful horniness in his balls was here to stay forever, and there wasn’t a thing he could do about it. He watched sadly as Jane invited another guy to her place and judging by his smile, he was going to have have one hell of a night. A kind of night that Tim would never enjoy, hell, he couldn’t even masturbate to the lovely thought of Janes huge breasts anymore. If only he had paid attention to the lecture.