Anus

I stood looking at Gina as she continued to suck Dan, and decided I wanted to sink my cock into her butt. I'd already fucked her pussy, and she'd just said I could fuck her arse. It just looked so good, all tight and inviting. With the way she'd spread her legs, her pussy was pulled open below, allowing me to see her inside her gaping hole. I continued drinking my beer and began teasing my finger around her cute little butthole. "Oh, Alex, are you going to do my ass already? I know I said you could, but isn't that a little quick?"
I ignored her and stuck my fingers in her pussy to get them nice and wet. "Mmmm, that's better," she cooed, unaware of my intentions. She pressed backward against my fingers while she bobbed up and down on Dan's cock, encouraging me further. I stroked my fingers inside her beautiful young slit and got them nice and wet then withdrew them and pressed one finger firmly into her ass.

"Hey!" she cried out as it slipped in easily. "I thought you were just going to finger my pussy?"
I didn't reply, and instead pushed a second finger inside. With all her pussy juice on my fingers it slid in easily, and I began sliding my fingers in and out of her as I sipped my beer.
She made no move to stop me, and it wasn't long before Gina was moaning in pleasure.
"Mmmmm... okay, yeah that does feel good," she said pulling her face off Dan's dick for just long enough to let me know she'd changed her mind, before going back to work.

As I finished the last of my beer, I went to put the bottle down, but another idea came to mind instead. I noticed the phallic shape of the neck of the bottle. It was long; thin at the end, but rapidly grew to a sizeable diameter. With two fingers still in her ass, I lined the head of the bottle up with Gina's pussy, and then slid the tip inside her. She flinched as the cold glass entered her, but didn't stop sucking Dan's cock, and so I began to slide the bottle in further. As it started to spread her wide, she looked around. "What are you doing, Alex? Did you stick your beer in me?"
"Yea," I replied, laughing.
"Oh... well, it feels okay, but why don't you stick your cock in instead? Before you stretch me too much with that thing."
"Yea, sure," I replied as I pulled the bottle from her. It was covered in her juices, almost right to the widest point. I'd already stretched her out about as far as it was going to go anyway. I set the bottle down just as the front door opened, revealing my wife arriving home from wherever she'd been.

Melanie looked surprised when she saw me standing there with my fingers still buried in Gina's ass, but that was very quickly replaced by a broad smile as she closed the door behind her. "Hi Dan, Gina, I hoped you guys would be here when I saw the cars outside. I didn't expect you to get started without me though!"

Gina pulled her face out of Dan's crotch as my wife spoke, and then jumped up and grabbed Melanie's hand, pulling her over to us. When they were standing beside us she turned and kissed my wife hard. As my wife began to respond and return the kiss, opening her mouth to Gina's questing tongue, her hand was drawn inwards until it was pressed against the wet pussy in front of her. She began rubbing Gina's loose pussy, before curling her fingers inward and sliding them inside.

Dan and I watched, enthralled as the two beautiful women made out. Gina reached upwards, grasping my wife's top and pausing briefly from their make out session, lifted it over her head. As she lowered her arms towards my wife's tight jeans she quickly and deftly undid the clasp of her bra. Wordlessly, Gina began unbuttoning my wife's jeans as they continued their passionate embrace. My wife turned toward us and let Gina kneel behind her grasping her jeans at her hips. As Gina pulled the jeans and Melanie's panties down over her butt, she shrugged her shoulders letting her bra fall to the floor. She stepped out of the pile of fabric, now fully naked, spreading her legs, and bent over toward Dan who was still sitting on the sofa with his thick cock standing proud.

Melanie grasped Dan's impressive tool and began stroking him as she stood bent over in front of Gina. The sight of my wife's naked sex right there was to much and she leaned in and began kissing her way up the back of my wife's thighs.