Your sister-in-law making the bed rock

You look over to see a big lump of moving blanket, where your bother and sister-in-law should be. From the sighs and muffled moans you know exactly what is going on under there. Even with another couple sleeping next to them, these newlyweds can’t keep themselves off each other.

The soft panting of your sister-in-law rock-hardens your cock. Your brother’s whispered cursing makes you jealous. Your wife has never made you take the lord’s name in vain. The bed bounces from their lovemaking. Your brother is absolutely giving it to her. Way to go bro, pound your wife’s pussy. Make her cum so you can hear and add it to your spank bank.

Suddenly the blankets on them fly backwards, your sister-in-law raises up, her hair a wild mess. Your jaw drops. She was riding the entire time. Your wife never wants to get on top. She gasps, “It’s too hot under there. I need air.”

She sits up straight on your brother’s supine body, straddling his hips. Even when flush and sweaty from fucking under the blankets, she looks great—a sexy side you’ve never seen before. She reaches up and starts unbuttoning her pajama top.

Holy shit. Holy shit. Holy shit.

You pray she doesn’t look over and see you gawking at her, but you aren’t closing your eyes. You aren’t missing this.

She takes off her top and flings it to the ground. You now have an eye witness account of why she has back problems. Her tits are massive. If anything the bikini pic undersold them. They fill out a soft smooth bra that creates such sexy perky cleavage. She raises her hair behind her head and you’ve never seen anything sexier in your life. You can see wear her hard nipples press into the fabric of the bra. Oh fuck. The shape is almost like a short line. Is she pierced!?!?

She sighs, “That’s better.”

She rocks her hips and resumes her ride. Your brother reaches up and squeezes her soft tits.

“Baby, this view is incredible.”

“Really?” She whispers. “How about this view?”

She bends forward and rests her hands on his shoulders. You have the perfect view down her low cut bra. Holy shit. Involuntarily you wrap your hand around your hard cock.

Your brother does exactly what you want to do. He buries his face in her chest pillows. Suffocates himself.

She rides him hard. Her hips moving up and down. They violently shake the bed. Lost in the passion of sex, they completely forget another couple is in bed. Her moans makes your cock leak pre-cum.

Your brother removes his face and you get an up close view of those fat naturals jiggling with her effort. She grits her teeth trying to fight off a screaming orgasm. She collapses and presses her face into your brother’s shoulder.

He pounds up from the bottom. The bed bounces you up with his aggression. He grips his wife’s ass and thrusts all the way in. He whines, “Oh fuck, baby. Fuck.”

They pant and sweat in each other’s arms. When your sister-in-law gets out of bed to put back on her clothes, you check out her bare ass. (At least your wife has your sister-in-law beat in one area). She pulls back on her bottoms sans underwear, and puts her top back on without buttoning it.

The newlyweds cuddle and pillow talk while you lay uncomfortably stiff next to them.

“You can’t get pregnant on top.”

“Of course I can. You were in me sooo deep when you came.”

Finally their talking stops, and you think they’ve might have fallen asleep. Your cock is still wide awake. It needs relief.

You roll over and spoon with your wife. You rest it against her dump truck ass. Your wife never initiates sex, but she had told you that she’d rather you empty your semen in her and not a tissue. You’ve never woken her up to fuck, but you know if you did and said you wanted to have a baby, she’d be down.

Your cock is throbbing. You hesitate to make the move. You could make your brother and sister-in-law.

But you’re too fucking horny after seeing those huge tits, you’re not thinking with your head.