Striving for Perfection

Part of why you hated your sister's favorite show was because of how absurd it was. The women in the competition were gorgeous, yet the show's hosts would pick apart their every little imperfection. Your sister seemed to love that part, now she was going to play the home version.

"Mom, I'm worried I won't be able to use sis to cum much anymore. I really need someone with the perfect body" you said. You knew that would rile up your sister; she immediately shot back "I look DAMN hot you troll. How dare you say that I don't have a good body. I've been to the gym more in the past week then you've been in your entire life!"

Mom, still firmly on your side, moved to shut your sister down. "Honey, don't take what he says personally. It's only natural for a man who needs to cum as much as he does to need some variation. You saw it in the hospital room earlier. He's not saying that you're not beautiful. He's just saying that there are some imperfections that will cause him to lose interest."

Andrea started huffing. "WHAT IMPERFECTIONS" she yelled. You smiled, took the sharpie, then circled a birthmark she had on the right side of her hip. "See this sis, this looks weird. If I had to see this during sex I'd probably lose my erection."

Andrea is shocked. You think you can see tears forming in her eyes. She doubles down on her point of view, "you're saying you couldn't cum because of a fucking birthmark? Do you know how many guys in just this town would kill to have sex with me?" You took the sharpie and moved it towards her tits. She swatted it away which drew some criticism from mom. "Honey! He's trying to be honest here. Stop taking things so personally."

You move the marker back to her tits and draw a big circle around them. "These are C's at best. I really want D's on the woman I use to cum. I mean, these will do for now, but in a few days....". Your sister now has her hands balled into fists. You're loving seeing her taken down a few notches. The idea of an overweight, pale little brother marking the smallest imperfections on his gorgeous, physically fit older sister was one you could jerk off to for the rest of your life.

You take the marker and draw a circle on each ass cheek. "These are decently sized, but they could be bigger. Personal advice Andrea, maybe hit the gym more?" That comment sent Andrea over the edge.

She collapsed on the couch and started crying. She covered her face with her hands. She managed to stutter out a "I spend every free moment I have in the gym you asshole". Mom comes over and sits on the other side of Andrea. She gives her nude daughter a big hug. "Honey, it's just a little honesty. No one's perfect. You're a model; you should know that people are impressed with your body. Your brother is just letting you know that he may not want to have sex with you after a little while longer. He's giving you the courtesy of telling you why so you aren't left wondering."

You smile and join in on the big hug. You then tell Andrea one of the "sweetest" things you've ever said to her. "Sis, you know what? Even with your imperfections, you're still good looking enough to fuck me. I hope you know that."

Mom smiles at you. "That was very sweet honey. You are such a sweet little brother."