Insatiable (Commission for DCrest13)
Contains: muscle growth, cock growth, hyperphallic, male to herm, breast growth, human to canine tf, excessive cum, musk, vagina growth, selftit-job, autofelatio, anal sex, vaginal sex, masturbation, fingering, sounding, household objects as sex toys, constant sex
The Ultra-Sexual World Chapter 1: High School
"the constant sex helps promote this by making all partners willing to mate anyone." continued the teacher. "naturally our bodies have protection against things going wrong.
Facility One Oneshot, Kelly and Sam
If you could see past the seed coated thighs, rumps, and faces, the still half hard members, the bare breasts and the smell of constant sex, it would seem like any other school.
Rimming Fox McCloud
So constantly fucking horny. so hot. i wasted no time in spitting on my paw and running it up and down my own shaft. "i hope you've got more in you, pup, because we've got all night, and i'm going to use every. single. second."
At Home with the Hopps’ (A Zootopia Jeeves Prompt, posted with permission)
To have resisted the urge to live a life of hard work offset by constant sex, instead trying to make her way in zootopia where, liberal as it professed to be, no-one was quite as horny as the bunnies back home.
Cole Cums Home Ch 1
The last time, the lion heaved in air through his nostrils, his ass sore from the constant fucking and his hips and thighs aching from being up in the air so long.
The Nocturnal Ritual
Her voice gave out and after a while all she could manage to do was moan, as the constant fucking took it's tole on her, and started bringing her to orgasm after orgasm.
Cabin Break: Part 6
She wanted to try something new now, something to keep herself going with him when her vaginal walls got too raw from constant sex. anal sex, her heart raced as she thought more and more about it.
Becoming Symbiotic #3
Soon those new hosts all looked to the skies and saw their creators constantly fucking and cumming, giving them more seed to absorb. you and your lover continued fucking for hours, constantly growing and spreading your seed further.
College Takeover: Part I
The couple cried in unison, their constant fucking had driven them into a burning need for more.
Horsing around
She enjoyed the feeling of being pregnant, sometimes even more than the constant fucking. and she really enjoyed getting fucked while pregnant. each time a foal would start squirming and kicking inside of her, she got aroused.
Conception. Part 3.
The boys also had been almost constantly fucking for two weeks. nero and odin had both improved their skills at mounting and fucking their fathers and each other. the saint bernard mix boys had even bigger knots than their great dane sires.