Thrashing Orgasm to the rescue

The door, literally always open, starts opening by Ria's hand. Your mom, in the throes of mid-orgasm while your sister keeps making her raise up on her toes, higher and higher while she fists the canal that the two of you came from.

"Oh fuck!" you hear your mom squeal around her hand and she lashes out with her free hand to push the door closed. "Not right now though, Ria, I'm...I'm.....fuck....fuck! Not...dressed....fuck!" she squeaked, managing to take her hand out long enough to squeak out the words, your sister's hand sloshing in and out of your mother's soaked cunt between every word. Rachel was relentless and your cock had never been this hard.

"Sounds like I'm just in time," you barely hear through the door and you see her push harder on it. "I don't know what's going on today, but ever since this afternoon...."

Your mom didn't answer your intrepid guest, she was too busy trembling and shaking. You see her thigh muscles quivering as she tries to stand, and for a few instants, you think the only thing holding her up is your sister's still-pistoning fist. Fuck, as your mom moves, you can see her toned belly bulging around that relentless clenched hand!

"Something in the air..." your sister pants out and bends down. You can't see her fisting your mom any more because she's slurping on her clit. Loudly. There's no way Ria can't hear that.

"And it's making us all..." your mom practically purrs out as her daughter slurps her cunt like a starving woman eating a bowl of melting icecream.

"Fucking horny..." all three of them said at once. "Fuck, what I wouldn't do right now..." you heard Ria add.

"What would you do?" your mom asked, her hand slipping off the door. She slipped her fingers into your sister's hair and pulled her closer to her craven cunt.