This surely hadn't been what they expected when they came over for New Year's eve, but for the pred, it was perfect.
They lured the prey over under false pretenses; "I'm throwing a party. Everyone will be there!"
When the prey arrived, they didn't seem too worried about being the only one there. They had a history of being early, after all. Instead, they plopped themselves right down on the couch and started babbling away about their resolutions for the new year. They wanted to exercise, treat themselves more, make new friends, lose weight, go on a diet, all sorts of things...
The pred slowly crept up behind the prey, only responding with idle "uh huh, oh, nice, yeah, same" to keep the prey talking.
They didn't even hear the pred coming. Their guard was down... which is precisely what made it easy for the pred to clap their hands on the prey's shoulders and lunge forward, seizing the prey's head in their jaws.
The prey, stunned and dumbfounded, could only uselessly try to bat at the pred. Some quick gulps quickly pinned their arms to their side, stopping the prey's rather pathetic attempts at pushing the pred off. Soon, the pred was throwing their head back, letting the prey slide down their throat. They couldn't help but rest a hand against their throat, feeling the bulge push out and swell as the prey slid down...
Within seconds, the bulge in the pred's throat was gliding downwards, briefly disappearing past their collarbone before spilling out into the pred's middle. The pred licked their lips and sighed happily, drumming their hands over their middle.
The response from the prey was immediate, thrashing around and protesting about being "betrayed" and how they thought the pred was their friend. Their voice was heavily muffled by thick layers of muscle, but to the pred, that just made the experience all the more satisfying.
Even better was how good the prey's struggles felt. Pleasure was radiating in waves across the pred's body, starting from the pit of their stomach. It was enough to make them lightheaded and their knees feel weak, so, quickly, the pred stumbled to their room and fell backwards in bed, panting and whining slightly as their stomach bulged out from the prey's struggles. Soon, they were covered in a fine layer of sweat, and they were practically clawing at the bedsheets, as if trying to ground themselves.
Their stomach roiled with the prey's struggles. Each new struggle or kick was almost enough to send the pred over the edge. The scene might've been horrific to onlookers; the pred's stomach was constantly surging outwards, as if about to burst, before squeezing back in. Each movement brought wet gurgles and sloshes from deep within the pred's stomach, and each time the pred's stomach clenched, the pred moaned.
Unfortunately for the pred, nothing good lasts forever. The pleasure radiating from their stomach got more and more intense, and, over time, their stomach started to feel more and more tight, like a rubber band pulled taut. It became harder for the prey to move with the pred's stomach slowly constricting around them, and, in a last fit of desperation, the prey gave the pred's stomach a sharp, powerful kick.
Just like that, the tension snapped.
Orgasmic pleasure coursed through the pred's veins as their stomach walls crashed down around the prey, churning rapidly around them. The prey screamed, only to be abruptly muffled by stomach walls grinding into their face and skin, smothering them. The chamber around them began rapidly filling up with liquid, robbing the prey of their remaining air. A loud chorus of gurgles filled the room, and the pred's stomach even rounded out and swelled from the additional liquid... and then, finally, the pred came down, panting hard as their stomach, now completely still, weighed them down in their mattress.
Slowly, the pred turned their head to their nightstand, eyeing the clock they had. In red, digital letters, it read. "12:01 A.M."
What a way to spend New Year's Eve...