Consummating the Arrangement

Your sister loudly argued until you got home. Your mom didn't acknowledge her though. In fact, mom had a visible smile on her face all the way until you arrive in your driveway. As you all got in the front door your mom snaps her fingers, points at your sister, then points at the couch. Andrea just stands there with her arms crossed. Your mom takes out Andrea's phone and starts deleting contacts. "Hmmmm, you won't be needing the number of Hot Guy From The Mall." mom sarcastically says. Andrea screams "nnooooo!" Mom continues picking random guys numbers from her phone and deleting them. Finally Andrea relents and sits down. You join her and mom stands in front of you both.

"Andrea, for the next week you are in charge of your brother. You will make his meals, you will take him where he needs to go, and you will help him cum. If at the end of the week John says that you did a good job then you get your phone back. If not, then I throw it away and take you off our plan."

Andrea starts crying. You think she would've cried at the site of her brother in a hospital bed. Apparently the idea of her losing the number of "Frat Guy #2" was even more unbearable. Ashley finally musters up an "alright mom". Mom then turns to you. "John, here are the rules. First, I'm afraid of any complications that may come up in the middle of the night. If you're in pain or need to cum I want someone there to help. I need you and your sister to share a bed this week. Second, if the girls from school want to come over to help you cum that's fine. If you need to cum though and you don't need someone specific I request that use your sister. It's of course your call though; what's important at the end of the day is that your scrotum is empty, no matter who you empty it in. Third, you tell me if she's giving you grief. She needs to learn how to put others ahead of her and if she can't then she doesn't need a phone."

You nod your head. Andrea tells mom that she is willing to comply. Mom looks at her then grabs her hand. "Oh no Andrea, it's not that easy". She then leads Andrea upstairs to your bedroom and asks you to follow.

Once everyone is inside your room mom shuts the door. "I've lived with you for 21 years Andrea. I trust your promise to help John as much as I trust your promise to go to college or get a real job. I need some assurance that you'll do what I ask and what John asks before I can get a good night's sleep."

Your mom turns to you and says something you thought you'd never hear. "John, honey, is it possible you need to ejaculate right now?" You're in shock, you can only muster up a nod. "Honey, is there anyway you can use your sister to ejaculate?" You enthusiastically nod. Fucking your sister was the biggest fantasy you'd ever had.

Your sister treated you like shit your whole life. Not just the normal sibling rivalry stuff either. Being three years older then you, she was always in control and used it to make your life miserable. She would purposely run all the hot water in the morning so you couldn't shower, bring over her girlfriends and tell them to make fun of you, and once even told the one girl you ever brought over to the house that you were gay.

You would've just tried to ignore her and forget she existed, but you had always been shamefully attracted to her. She was easily the most beautiful woman you'd ever seen. Short blond hair that she often wore in a pony tail, beautiful porcelain skin, and a supermodel face. She was a fitness junkie so her body was incredibly toned too. Perfectly round C cup breasts, a midsection so tight you could see her abs, and the best set of legs you ever saw.

Most of the times you've cum in your life were because you were picturing yourself having sex with your sister. Now, your mom was going to make that fantasy a reality for an entire week.