Yey, finally, I did SCP art again.

A big metal door opens with a clatter. A creature contained here opens one of its eyes and looks at entered. Then, it looks at the opposite side of the cell - with a big armored window in it - and growls. If there are so many scientists there, it means that they will do another weird experiment. The creature stands on its feet, stretching its body. The person who entered here immediately noticed how big the thing is: almost 4 meters tall. Besides that, the creature resembles a lizard humanoid with muscular digitigrade legs with four toes ending with enormous claws, pale gray scaly skin, green hair that starts on its head and goes along its spine up to the end of a long tail, a pair of strong arms, and six eyes. All these are in addition to a regular humanoid body with pair of boobs and a fold on the crotch.

Scared, the person tries to return, but the door closes before him. The lizard grunts at him and turns to the window.

“You, again!” The monster recognizes one of the scientists. “First, you turned me into this form; now what?!” She angrily scraps the window, but it is too strong to be damaged with her claws. A speaker that connects the viewpoint with scientists and the cell remains silent.

“Come on! Talk to me, you bastards!” She growls and looks at the window, “Why the hell are you even here? Usually, you guys tried to kill me, but the last few ones just make me pissed off.”

While the lizard is busy speaking, the person opens a lock on a container he brought. Without any sound, the lid of the container is slowly raised, showing the orange substance pouring out of it. It’s hard to believe how much more liquid is ejected from the container than its size. The weird goo forms a blob and, after a few seconds of inactivity, slowly slips to the lizard. After reaching the position under the monster, the slime starts covering her feet using tentacle-like extensions.

Noticing something, the monster goes silent and looks down. Realizing something, she roars and tries to get her feet off the goo, but it is now stuck to her paws and won’t fall out that easily. The blob quickly crawls up, covering the creature’s legs and moving further.

“You bastards are at it again?! Come on! Give me a break!” She yells but quickly shifts from one foot to another, trying to stomp the slime. Her expression has also changed; now she is holding her breath and blushing.

“You are really enjoying it, aren’t you?” One of the scientists finally speaks, “Your face says everything. We already know that you cannot resist the tickling sensation from SCP-999, so we enhanced it a little. And also, you can’t do any damage to it either.”

“Nnn… No way… I…” She moans, unable to resist the sensations she gets. She doesn’t want to show how she feels, but her body reacts independently.

The slime already covers her knees and moves up, going between her legs. The lizard gasps and grabs her pussy. She wants to stop it, but can’t do anything. Her claws won’t even scratch the slime, freely moving through, and it doesn’t matter what part of her body it touches - all parts are as sensitive as her pussy is.

“No! No! Nononono!” She begs for a second before letting out another moan.

The goo quickly slips through her hand and reaches her crotch, sending waves of pleasure throughout her body. The creature starts panting heavily, holding her mouth with one hand while the other holds onto the wall. She looks at the window with hatred but can’t keep her facial expression any longer and tilts her head back.

“Oh… Fuck!” She gasps for air, feeling the slime moving inside her, “What the hell are you doing?! You are not going to put it in my…”

Before the lizard finishes the sentence, a few tentacle-like extensions move up, penetrating her pussy and her ass. They are pretty thick, but their elasticity makes them able to slide without causing any pain. The monster lets out a long, loud moan and then bends, resting her hands on her knees.

“Oh, fuck… Oh, shit… Oh, shit… That’s good… Fuck!” The creature curses, not being able to resist the feeling. She cannot think about anything else but the sensations that run through her body, forcing her to change the position of her legs constantly.

Her tongue hangs out of her mouth, and she breathes with her mouth open. The slime has now almost completely covered her lower body, sending a tickling sensation from the inner sides of her thighs, from the bottom of her boobs, from the area between her toes and a few more places. She can barely stand, and soon, her legs are buckled, and she falls to the ground.

The slime covers her nipples, making her moan hard and bend back from another climax. The lizard rolls onto her back and stretches her limbs, grabbing the floor. She tries to get rid of it but can’t do anything but laugh and moan while the orange substance fills her insides. It feels like a huge cock, pumping inside of her, but at the same time, it is soft and squishy, stimulating her walls. She tries to move her legs, but the goo is too strong and won’t let her escape.

“Lizard, do you know what are you missing? A huge sensation point between your legs, won’t it be an amazing addition to your pleasure?”

Her eyes widen when she realizes she understands what the scientist is trying to imply.

“N-no, I won’t grow it! You can’t make me…” But before she finishes the sentences, she already feels her body like it, reacting to this idea. Her clitoris grows, turning into a massive, extremely sensitive penis. The slime covers it entirely in seconds.

The creature rolls her eyes and lets out a scream, not knowing how to handle the sensation she experiences. Her mind goes blank, and her legs move constantly, trying to deal with the sensations. Her arms and legs twitch, and she lets out a stream of her cum.

“Wow, she didn’t last a minute,” one of the scientists comments.

“What did you expect? It was the first time she had a cock. Besides, SCP-999 was working at max.” Another scientist shrugs.

The creature lays on her back, still cumming. Her whole body shakes from the orgasm.

“I will… Kill… You!” She says, not able to think properly.

“Yeah, yeah. We are already used to it. You always threaten us, but nothing happens,” the same scientist answers.

The lizard is trying to focus, remembering her last encounter with this slime. The wave that made her escape the previous time! She can do it now! With her last efforts, the creature focuses all her strength and releases a roar with a wave of energy. But the wave instantly gets absorbed by the slime and reflected back.

The creature’s eyes roll back, and she starts screaming loudly. The reflection of the energy makes her even more sensitive to the slime’s touch. She starts to laugh maniacally.

“I… Can’t… Take… It… Anymore!” She says in between the laughter.

“Oh, SCP-999 managed to deflect her adaptation. And now she tastes her own medicine.”

“This is the first time I see her like this.”

“It’s probably the first time SCP-999 does this as well. The slime is learning.”

The creature rolls around the cell, laughing uncontrollably.

“How is it? Feels good, right? Your body is telling you this,” the scientist speaks.

She continues rolling around the room, her body completely covered with the slime, and her penis constantly leaking the precum. Her whole body shakes, and her muscles get cramps.

“Just admit that you enjoy it, lizard. You won’t fool us.”

“F-fuck… You!” The monster answers.

“If you say so. Have fun.”

The monster continues rolling around the cell, laughing and moaning, but the slime doesn’t stop. It continues for an hour or two. When the creature falls unconscious, the slime slowly retreats from her body, leaving her on the floor, her body covered in the slimy substance.

“Wow, it took a long time, but she managed to last that long. What an impressive resilience,” the scientist says.

“And the amount of cum she produced was incredible as well. This will take some time to clean up,” the second one answers.

“Yeah, I wonder how much the next time will take. But why she didn’t adapt?”

“Who knows? Maybe she was too focused on dealing with the new organ, or her own wave of energy was so overwhelming. Or maybe her new body just enjoyed it and wouldn’t ruin the fun. She won’t tell us the truth anyway.”

“Let’s wait and see. Next time will be interesting.”