What's happening?

"Oh my God....... this feels........ so....." Trevor said as his demonic teacher bounced on his cock in the middle of the school hallway.

"It does, it feels incredible! We should have been doing this all along," Annabelle said with a devilish grin. "I've wanted you so bad, Trevor. And now I'm gonna take everything."

"What?" He asked, not sure what she meant by that as she continued to massage his cock.

Her pussu felt strange but incredible. Her vaginal fluids made his cock tingle as it dripped down, covering his balls in a layer as she continued to milk him. Her skin was warm to the touch and she wanted him to touch her. She grabbed his hands and placed them on her tits which he could swear were larger than they were before as he squeezed them.

"That's it! Who cares about your grade! You've passed as far as I am concerned," she said as she bent over and started to kiss him, letting his hands explore her body before they caressed her tail. "Oh God, that felt so good," she moaned as her eyes rolled into the back of her head before he grabbed it. "Oh shit..... what are you....... It's sensitive," she said as his grip tightened on her new demonic appendage. "Oh shit....... stop..... I mean...... don't stop....... what is this feeling?"

Trevor gripped her tail, even stroking it a little as she seemed to enjoy it. It felt so weird, but he wanted her to enjoy herself as much as he was, as she whined and moaned while her tail wiggled wildly.

"Holy fuck! I think my tail is........ It's gonna cum! I need to......" Her tail suddenly moved quickly and slithered into Trevor's ass.

"Woah..... ah.... what are you....... stop that.... oh shit...... this is wrong...... but I....... oh God!"

Trevor felt strange and violated at the same time. Her tail in his ass wasn't the most comfortable thing, but it was somehow making his penis feel even better as she continued to milk him. He wasn't sure if he wanted it to stop or not.

"Shit... what is...... oh FUCK!" He yelled as this strange liquid began to squirt out of her tail and into him.

He didn't know how to react as it felt strange, but also kind of good, as he bucked his hips and started to cum as well, filling her pussy with his fluids. But something else was happening. His penis was starting to turn red, starting at the base, and also grow thicker. This fluid she was filling him with was changing his body and he didn't know how or why.

"Annabelle....... what...... what's happening to me?" He asked as he watched his cock grow larger inside her while she moaned louder with every pulse.

The red began to spread up his stomach, affect the rest of his body as well. His stomach hurt, but he soon saw the muscles tighten, forming abs, followed by his chest muscles as well. He felt his teeth starting to change as well and he knew he was turning into something like her.

"Shit.... SHIT..... WHAT......... OH GOD!"