Maybe

Andy was gently put back down on the mattress as the different tendrils started to release his member. It was only half erect at this point, covered with a thin layer of green good, along with some leftover cum as well.

"That was delicious," Voroth said as the bigger tendril gave the tip of his cock a gentle kiss before sliding back into the portal. "However, we aren't done yet."

"Shit....... what was that word?" He said as he reached for the book, knocking it off the bed.

"Tsk tsk, I said we weren't done yet," Voroth said with disappointment in her voice as a different tendril emerged from the portal, which had opened to about the size of a Frisby at this point. "You want to have more fun, don't you?"

"I........ I uh....... prop....... shit....... Propay?" He said, trying to remember the words needed to close the portal.

"You're hurting my feelings, Andrew," she said as this tendril emerged, hovering over his cock with a rounded tip that began to split open. "You make an offering to me, and then try to go back on your word? That's not very nice."

"Wha....... what is that?"

"Oh, this? Just the next toy for us to play with," She said as the tip split open almost like a flower and this tiny tendril emerged from the center, wiggling around violently like a worm.

"Wait...... fuck...... wayt are you...... going to do?" Andy said with panic in his voice. "

Before she answered, the new tendril grabbed the tip of his cock. The smaller tendril inside was still moving around as he felt the thing tighten around the tip of his cock, followed by a new sensation. The little tendril inside began forcing its way into his urethra, sliding down inside his penis.

"Shit.... wait..... what are you...... oh God!" He cried out as his cock grew stiff once more. "Fuck.... what the word?" He said desperately trying to remember. "Port.... something?"

"Now, behold my gifts," Voroth said as he began to see a light flow through the tendril, towards his penis.

Something was starting to flow into his cock, filling it from the inside. He saw his shaft and balls start to glow with a green color from the inside. It was a warm sensation that felt very strange but oddly good too. He bucked his hips and desperately looked around for the book, trying to reach it on the floor but he could not.

"I don't think you'll need that anymore," Voroth said as another tendril slithered through the portal, grabbing the book and pulling it back through.

"No!" He yelled, knowing he was screwed now.

"I can show you much more than that silly book can. Besides, you offered me your penis, and it is mine now," she said as he began to see his testicles inflate, still glowing as he was filled with this strange liquid that made his cock burn with a supernatural lust.

More of the green goo dripped down his cock as the head of the tendril would not release it. He was in a panic, but the sensations were too good to deny as he thrashed about both wanting this to stop but also wanting more.

"Yes, doesn't it feel good? These silly little organs are so easy to manipulate," she said as his penis was constantly glowing at this point and getting larger.