Preface - PLEASE READ!:
This is the ninth part of what is a running story. It is all about the taboo. You will not find romance here. Any notion and talk of love is subverted to serve the taboo.
Anal sex and incest are MAJOR themes of this story.
You may want to not read this part and other parts if you take offence to any of the following in a lurid, obscene (and of course fantastical) context: incest, rough sex, submission and domination, degradation, extreme sodomy, ass worship, extreme dirty assplay, light or implied scat, and EFRO (erotic female relieving observance).
All characters involved are 18 or older.
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"I need to go now," Ana says, looking pleased with herself.
"Go where?" you say.
"I need to go have one of my huge poos of course!" she smiles.
"Okay honey, let's go to the toilet." You both strip off the rest of your clothes, and you follow her big naked wiggling bottom to the bathroom.
She sits herself down on the toilet seat, her large buttcheeks swamping it, her butt squished down by her weight, pushing the bouncy assmeat to the sides. She backs up as far as she can, leaning back a little, and lifts her legs up to accommodate you.
You move forward, able to position yourself sitting on the edge of the toilet with her legs and waist in your arms. You rub your cockhead over her asshole, smearing your previous deposit of cum around evenly to give it a good coating of lube for the stretching to come. You push very slightly, just enough to part her butthole and dip the tip of your head in, giving the inside of her bumhole some extra lube.
"Can you fuck me on the toilet daddy?" she says eagerly.
"In which hole?"
"My little cunt. Fuck my little pussy while I need to poo daddy... I wanna squeeze one out while you're fucking me!"
"You filthy girl. Is it gonna be a big one?" You give one of her big tits a squeeze and a slap with your hand, and guide your cock into the sopping wet hole between her legs. Her juices run down to mix with the semen on her pouting butthole, and your cock rushes as deep in as you can in this position.
"Mmmm," Ana bites her lip. "Oh yes daddy, it's gonna be huge! I've been keeping it all day. I can feel it stretching my bum while you're stretching my pussy, it feels like I'm being double-teamed. It's so sexy!"