Fuck test

On a bed lying naked on all fours was Professor Ruby. She had one hand spreading her pussy lips open, inviting John to stick his cock inside.

"Your first lesson is not to make a monster girl wait. If she wants the dick, you better drop whatever you're doing and fuck her hard."

"Yes, professor!"

John rubbed his 6-inch shaft and prepared to penetrate Ruby. His dick was still in its beginner stages of growth. Still, soon when he acquired more monster girls it would develop more traits such as increased length, girth, ball size, cum capacity, knots, flares, extra testicles, extra cocks, little nubs around the shaft, different cum flavors, and so on, all depending on which monster girls he fucked. There were limits though so after fucking a fair bit of monsters his growth would reach its maximum. Each monster girl would give a Tamer's cock a trait that would fit her need the more they fucked her. Although, every monster girl provided at least a bit of length and girth increase.

John's dick head smushed against Ruby's cunt, trying to find her vaginal opening. He pushed forward and slid his cock into her warm embracing depths. Ruby had nice flawless skin and an ass that was ripe for spanking. Like the hard worker he was, he started his thrusting, determined to make the scientist cum.

"That's a good pace. Now your next lesson is to make me cum, John. Think about my orgasm first before yours. You need to make sure I cum at least once. Try anything you can. If I pass out from cumming you get a perfect score."

John listened to her advice and put it into practice. He started experimenting with the pace trying to figure out which speed worked best for her. First, he tried regular speed but it didn't seem like she cared. Then he tried to fuck her at his highest speed but it still didn't get a reaction. She was still moaning and panting but not at the level that he wanted. To get a perfect score instead of just a regular pass, John needed to fuck her brains out and make her tongue stick out like a bitch in heat.

'Hm...she doesn't like fast or regular....maybe slow?'

"Oh!"

John slowed down his thrusting which got a slight reaction out of her, but not enough. He was getting close though. He thought about and decided with deep, hard slow thrusting.

"~Ah...yes..." Ruby moaned, closing her eyes.

'Yes! She likes it! Success!'

Now it was time to put his hands to work. He had various options to grab her from this position. He placed his hands on her tits and squeezed, getting no reaction, along with pinching her nipples.

'So she doesn't like breast play, huh?'

He tried pulling her hair back but that only seemed to annoy her. To his surprise, rubbing her clit also proved to annoy her along with fingering her asshole. Then his eyes landed on her ass cheeks. With each thrust of his hips, it would send a shockwave rippling from one ass cheek to the other. Out of reflex, John brought one hand up and smacked her ass as hard as could.

*SMACK*

"~ANNNHHH!"

'That was a loud moan!' John thought.

John had Ruby moaning loudly with one hand smacking her supple ass and his long hard thrusts, jabbing at her wet sloppy pussy.

'Not yet! There's still one more thing I can do! I think I know what it is!'

With a mighty guttural roar, John wrapped his other hand around Professor Ruby's throat, squeezing hard but not too hard as to hurt her.

"GAHH!!!"

Ruby's tongue stuck out and her eyes rolled over her head while drool leaked from her mouth corners. Her pussy quivered and she came onto John's cock, spraying his crotch with a jet of Pussy Juice. It seeped down her leg and wet the bed underneath.

"I did it! Do you like that professor?! Huh? DO YOU! *SMACK!* LIKE! *SMACK!* THAT!? *SMACK!*" John said with each slap and thrust to her ass. He pulled her head down and **** it against the bed. He wasn't sure how long he had to keep that up but he endured for as long as he could. He would make the professor cum until she passed out, and now, she was still conscious.

{Several hours later}

"There, hah, knocked her out, hah" John panted as sweat trickled down his forehead. John had cum into the depth of her vagina several times before she passed out. A few minutes later and he would have reached his cum capacity and not gotten that final perfect score. This was the first and hardest fuck he had ever done but it didn't deter him. The road to being a Tamer was difficult and filled with many obstacles.

"J-John...ahh..." Ruby sighed in ecstasy, waking up a few minutes later laying down on her back and staring at the ceiling with a pleased smile on her face. "You get an S+ for sure. Definitely, a hard and talented fucker. Good job kid."

"Hehe" John rubbed his nose and smiled. "Thanks, Professor."

"Now it's time for you to choose your first monster girl companion. Are you ready kid?"

"Always have been, professor."