"Time for your punishment. You must wear this chastity belt until I take it off!"

"And as for you, young man. Time for your punishment. You must wear this chastity belt until I take it off!" Lisa says, pulling something out from the back of an unused cabinet. It's an old package. "It was your fathers. It filled me with joy knowing he wore it all the time. You were only four years old when he died so you wouldn't even have known. I made him were it permanently. Oh, when I fucked him at night and him not being able to touch himself and yet still cum through the belt. Mmmh..." your mother trails off.

Lisa jumps back to the moment and continues, "well, I want you to have it. It's still in mint condition. You must wear this until I say otherwise. Maybe then you'll learn not to give in to your desires and begin to think about others for a change."

"But, I didn't kno-"

"Shush, yo-"

"But they were just as mu-"

"I said shush. Listen. They've been punished. This is your punishment. Wear this, think about what you did, and do think more about your family! Now, all I want to hear from you is a 'yes, mom', understood?"

"Yes, mom," you say with a slight sigh. You're handed the belt. You take off your pants and underwear. You step into the belt and tighten the harness. It locks like a pair of handcuffs, so there is no way to loosen the belt without the key.

"Good. Now, off you go," your mother says with a satisfied smile. You walk to your room.

On the way to your room, you pass Crystal's room. You hear her groan and sigh softly. You peek in. "Hey, what's up, sis? You alright?" you ask.

"Ugh, no. I'm so full it hurts. I feel like throwing up half the time. And I'm really horny. I didn't get to cum after watching the porno earlier, and I could hear them all the time when mom made us drink her cum. It's driving me crazy; I can’t stop thinking about it!"

"I'd love to help you," you say as you enter the room.

Crystal is on the bed. She looks at you and widens her eyes. "What happened to you?"

You realize you forgot to put your pants back on. "Well, mom made me wear this because I made my desires get the better of me."

"Oh, I'm sorry. It's partly our fault. I feel bad for you."

"It's alright, she'll probably take it off in a couple of days. Need help with your cock?

"Yeah, it's just… my stomach aches so much, so you can't really jump on it, and I can't fuck you, so could you suck it? I'll cum in your ass in the last second so you don't have to drink it. You're pretty full, too."

"Alright," you say and sit on the bed next to her. You turn around and get on all fours, facing her. She’s on her back nude and legs slightly spread. Her cock is pointing towards the ceiling and twitching.

With your knees between her feet and your hands on either side of her hips, you look your big sister in the eye as you take her cock in your mouth. She looks back, and neither of you break contact as you lower your head all the way down to her groin.

She gasps and moans. You slowly pull away and push down. Neither of you are interested in rocking the bed and increase your tummy aches.

You keep looking into each other's eyes. You also keep the slow pace for the moment. But it doesn’t matter as your sister is clearly hot and bothered from all the teasing.

You use the time to savor the feeling of her cock in your mouth. Her fat, long cock that you can take all down your throat with little effort. Oh, and kissing her groin, as your lips make contact. It’s an awesome feeling when you have her 12 inch cock all lodged in your mouth and you suck on her skin.

“Doug, we better…” you hear, and immediately pull out. You turn around, turning your back to your sister and sit down on her cock. You slowly move up and down a few times, just putting her over the edge. “Oh God, Doug, thank you,” she whispers through her moans as she cums forcefully into your ass. You love the feeling of her cock in your ass, and her orgasm into your ass turns you on a lot.

And then she stops. She moves out of you and pulls a blanket over her. “Thank you, Doug, I really needed it. Good night.”

“Good night,” you say with a hint of disappointment, which your sister doesn’t register. Now you are turned on and bothered, but you can’t really do much about it with this chastity belt. It’s soaked through with your precum. You consider waking your baby sister and make her fuck you, but you decide to follow your mother’s advice and stop thinking about yourself.

You take a quick shower, flushing the belt with the shower head. Not much else you can do. You then hit the sacks, but thoughts about your sisters’ cocks keep you awake for hours.