It was dark by the time Rainbow Dash got home. An evening spent with her friends, just being friends this time, had been as tiring as it was relaxing. She turned off her motorbike and walked inside.
Barely inside the door, she was confronted by Thunderbolt. "Whoa, what's up b…" Her words trailed off at the intense look in the dogs eyes. A shudder ran through her, and she felt her body start to burn with hunger.
Thunderbolt couldn't talk, but if he could he would have given his bitch a command to get ready. He wanted to ride her, to shove himself into her and plow her body, and he wanted it right away.
In Rainbow Dash's head, the parasite still hadn't actually modified her mental patterns yet, but it could deliver its dose of hormones when it knew she should be feeding it.
A palpable heat grew in Rainbow Dash, and she ran to her bedroom. Pulling her shirt and shorts off, she kicked her shoes into the corner and barely shimmied out of her socks when Thunderbolt was nuzzling behind her. A rush of pleasure, and Rainbow Dash was ponied up.
Kicking her way out of her panties, Rainbow didn't have time to get her bra off before Thunderbolt was licking at her. Each lick melted her resistance more, until she slowly sank to the floor. On her belly, she parted her legs to let Thunderbolt keep up his work, and felt not only the rush of need, but a sudden inability to keep herself awake.
Rainbow Dash made a brief effort to climb up into her bed, but her eyes closed before she got a second handful of the covers, and they wouldn't open back up. Moaning, she sank her head down and felt sleep wash away everything.
The parasite was hungry, and each time Rainbow had thought about Thunderbolt screwing her, she had resisted it still. Kind to its host, the parasite sent her to dreamland as it braced her legs and pushed up and back.
Thunderbolt's bitch was presenting. He admired her tail—cocked to one side—and dove in with his snout. She was wet, and tasty, and the dog nuzzled and lapped until his own desires became too much. Rearing up, he landed on the girl's back and—with practice—hit his mark right away.
Learning all about Rainbow Dash's body, the parasite knew the muscles to squeeze, and the ones to stretch, and the girl's body pushed back into the thrusting dog's assault.
Grinding himself as deep as he could with each thrust, Thunderlane's own parasite only egged him on to fulfill the needs of its own hunger, and Rainbow's parasite's. It was still growing in the dog's head, and was nearing the limit of space therein.
Deep in a dream, Rainbow Dash dreamt about Spicy at first. She imagined him tying her down, and screwing her silly, but a little part of her mind told her that was wrong. No. He tied her down, and offered her to Thunderbolt.
In her mind, unable to resist the dream dog's attack, Rainbow Dash surrendered herself and squeezed around her fake and real doggy lover. Her mind knew what Thunderbolt felt like, and every thrust he actually delivered, her subconscious passed on. She howled with Thunderbolt when he climaxed, each of them hitting their peak as if on a timer.
Thunderbolt, having tied his bitch, lay down on top of her, forcing her to conform underneath him. Nuzzling and licking at the girl's wings, he eventually just rest his head between the additional limbs, and waited.