Astrid's Chamber
Story by Kotelette on SoFurry
Astrid builds a chamber for Toothless that enables her to replace all of the oxygen in it with carbon dioxide, asphyxiating Toothless without involving water while she greatly enjoys the view of his body desperately spasming and struggling to keep him alive. When he finally dies (not permanently), she places her pussy onto his face, resulting in his first breaths after 10 minutes without oxygen to be pussy air while forcing him to pleasure her breathlessly in order to be allowed to finally breathe again.
Astrid was really aggravated at Toothless for nearly killing her in the sea yesterday. She secretly really liked it, but she still wanted to make him 'pay'. So she thought for a while and came up with the idea to build a chamber with the help of a few items and tools.
“What're you working on, Astrid?" Hiccup asked, curious as to what his girlfriend was so intently working on.
“Oh, just a way to make Toothless pay for nearly killing us," she explained in a sarcastic voice.
“Eh, okay. I thought you actually liked it, but whatever, please just make sure you don't kill him permanently," Hiccup dearly requested, not wanting to lose his best bud.
“Sure, sure," Astrid said, continuing to work on her chamber.
“So, what is it?" Hiccup asked out of curiosity, Astrid having triggered his intertest.
“It's an airtight chamber for Toothless. I'm gonna replace all the air in it with carbon dioxide, leaving him completely without oxygen," she explained to him, already getting wet just by thinking about it.
“That sounds kind of extreme, but I must admit having gotten to like it quite a bit myself. So…I am looking forward to it as well," Hiccup shily admitted, “but please don't tell Toothless!".
“I won't, but I'm glad you like the idea too," Astrid told Hiccup brightly.
…
After Astrid finally finished her build, she hastily called Toothless to get over to her. He was getting kind of worried upon seeing what she built, but didn't want to be called a coward, so he just did whatever Astrid told him to. She ordered him to get naked and lie down in the chamber in which she had kindly laid out a couple of blankets. After he got in, she closed the top lid above him and placed several rocks on top to seal it up completely. She then went over to Hiccup and turned on the vacuum pump she connected to the chamber earlier, but quickly opened up the gas valve of the also connected CO2 bottle shortly afterwards, to prevent cooking his blood from the otherwise lacking pressure in the chamber. When she was done with the setup, she dragged Hiccup with her and stood in front of the chamber, closely watching the very naked and attractive Toothless lying in there.
At first Toothless didn't notice anything odd, but after a while his mind was starting to become hazy and his breathing increased in pace like he had just run a marathon.
Astrid giggled mischievously upon seeing his now rapidly rising and falling chest, focusing intently on the way his pec muscles were stretched by his breathing, as well as looking closely at his partially rising and falling abs too. While doing so, she noticed something that really delighted her; his cock was getting erect.
Toothless in the meantime was starting to hyperventilate, his body desperately trying to receive oxygen which was nearly impossible at this point given that nearly all of it was gone by now.
This caused his body to panic, now flexing most of his muscles tensely, desperately trying to find a way to receive oxygen.
Astrid was aroused by this sight immensely, seeing how all of his muscles were now tensely flexed while his chest was thrashing violently. But the most enticing thing was the view of his now painfully hard member which started to flex as well, resulting in enormous amounts of precum steadily flowing down the incredible length of it, along all those ridges and veins, to flow onto his tense stomach between the abs ridges.
Hiccup began smelling Astrid's immense arousal, greatly enticing him to start licking her. So he quickly undid her skirt and panties and immediately went to work on her, not wanting any of her hot arousal to drip to waste.
Toothless breaths were now sounding really desperate, roughly inhaling to quickly exhale again, coughing a few times doing so. His cock seemed to play with itself, steadily releasing tons of precum to flow down onto his stomach.
Toothless felt how his vision was getting darker, clearly feeling and hearing his heart rate which seemed to slow down more and more. Seeing his struggle turned Astrid on immensely, constantly increasing her juice flow which Hiccup was gladly sucking down, enjoying her drink as always.
Astrid was pretty jealous seeing his spasming cock, knowing she couldn't give it any attention herself, leaving her pussy and mouth drip from the sight of this beautiful yet unattended monster. But by the way of things, Toothless actually seamed to reach his orgasm due to his asphyxiation anyways, his cock currently spasming violently.
When Astrid looked at his face, she saw how it was now deeply blue in color with his eyes being closed. His chest was also reducing its spasming, his body apparently shutting down. She then returned to closely observing his penis, seemingly really close to orgasm now. And then he came; his cock trashing violently, spraying his enormous powerful load against the top lid to drip back down upon his upper body, letting his gorgeous muscles shine in a beautifully arousing way. Seeing this was too much for Astrid, now orgasming as well, filling Hiccup's mouth completely with her delicious juices.
When she was done, she went to open the lid back up, but quickly put her irreversible metal plugs into Toothless nose and sealed his mouth up with tape, ensuring he was still oxygen free even though she opened the chamber back up; she had one last desire before she wanted to let Toothless breathe again.
She sticked her tongue out as wide she could and slowly dragged it across his whole upper body down to his cock, taking it into her mouth and licked all of his cum off of him. She continued doing this a couple of times given his whole upper body was covered in a thick layer of his delicious cream. She nearly orgasmed a second time upon tracing her sensitive tongue along all these amazing ridges and veins of his pecs and especially abs while getting to taste his beautiful cream at the same time; just beautiful. It was especially turning her on knowing that he was still completely without oxygen, and this for probably ten minutes by now. When she was done licking every last drop of cum off his steel like muscles, she placed her ear on his powerful chest, just like he had done to her. She was so aroused hearing that his heart had come to a complete stop, leaving her with a completely oxygen, clothes, and lifeless muscle beauty to her mercy. She continued touching him intensively wherever she wanted, exploring him like she never dared to. When she was satisfied with her exploration of his 'breathtaking' physique, she deemed it to be about time for him to breathe again, but given her dripping pussy, she had one last idea.
She positioned her dripping wet folds just over his mouth, removed the tape from it and then immediately lowered herself down again, ensuring his first breath of 'air' would be coming from her pussy while also letting her juices drip into his mouth. It took a bit for his body to realize he was able to breathe again and instinctively inhaled deeply, only to be surprised immensely by the fact that his lungs were now completely filled with the extremely potent pheromones of Astrid's pussy. He inhaled a couple more times only to come to the conclusion he was still not getting his desperately needed fresh air, but was receiving Astrid's pussy air instead, supplying him with enough oxygen to barely stay conscious, but not enough to be finally relieved again. So he accepted that the only way he was getting his oh so desired fresh air, he needed to get Astrid to orgasm, quickly getting to work. He entered her wet folds with his tongue, intently and desperately exploring her insides, trying to find the spot that made her moan the most to focus on this one intently.
Astrid was delighted receiving such a good blow job, figuring Toothless' desperation to get what he was lacking for over fifteen minutes by now, was causing him to satisfy her so greatly.
And to Toothless' delight his technique actually worked, and Astrid came really hard into his mouth, forcing him to gulp down everything she had to offer.
When Astrid ensured that her pussy had nothing more to offer him, she carefully got off of him, finally relieving him with fresh, oxygen rich air.