My  wife and I are both proud geeks. You name the convention, and we’ve probably gone at least once. Besides gaming — tabletop and digital — we also love to channel our creativity into some wild cosplay sex sessions with each other. Some guys have to beg their ladies to wear a space princess slave bikini, or maybe even dress up in a sweet sailor outfit. But my wife rocks such attire on a regular basis!

Avery is talented, both as a seamstress and an actress, so she can pull off almost any wild role I dream up. She also loves surprising me on random nights with a new character or an outfit she came up with herself. Naturally, when it came time to celebrate our recent anniversary, we both wanted something big and memorable.

We enjoy an open marriage, so sometimes we’ll hook up with different people, but our cosplay-themed sex had always been just us.

“Babe,” Avery called out to me from her office. “Come in here.”

She motioned me over to the couch, where her laptop was open to an adult networking site.

“This is Kendra,” she said gleefully, showing me a photo of a gorgeous gal. “I know you like redheads as much as I do. She and I have been chatting.”

“Oh?” I felt excitement stirring within me already. “What are you cooking up?”

Avery giggled and said, “A very special anniversary surprise — and a unique one, too.”

“What do you mean?”

“You know that alien abduction fantasy we’ve been talking about?”

I nodded eagerly.

“Kendra is interested in being our federal agent. She’ll require lots and lots of probing.”

And just like that, my dick was rock-hard.

“Damn, baby! When?”

Avery giggled and unzipped my pants as she said, “This weekend, but right now, I have other plans.”

After a much-needed quickie on the carpet, Avery and I got to dreaming about and planning for our big sci-fi-themed anniversary fuckfest. We texted back and forth with Kendra, going over every detail to make sure we were all on the same page, and we were.

Avery is five-foot-four with natural C-cups and gorgeous hazel eyes. For our big night, she procured a metallic silver, harness-style crotchless teddy with removable breast cups. She paired this with clear go-go boots. And for me, she made a matching pair of shorts with a cool space visor to go with it. I was the captain of our ship, but she was the commanding sex — er, science — officer and first mate. (Yeah, I’m sure some of you are laughing at us — but don’t knock it until you try it!)

Once Saturday night rolled around, we got a text from Kendra that she was ready. She was dressed up in a black pantsuit and sunglasses, and had a fake federal agent ID badge. The way we decided to play it, Kendra was to enter our dark house to check on the residents who had reported seeing strange lights in the sky. Once she reached the hall, I would “blind” her with different colored flashlights to simulate the alien activity.

Our bedroom is a geek-friendly love nest. We have black lights in the closet and glow-in-the-dark stars on the ceiling, and Avery made a silver cover to go on top of the duvet. We would have gone old-school with a metal exam table, but let’s be honest, they’re uncomfortable for fucking.

Anyway, once the flashing lights had overwhelmed her, Agent Kendra found herself on our tricked-out king-size bed. I aimed a fake stun gun at her, and without any fancy ropes or cuffs, Kendra pretended she was unable to move.

“You won’t get away with this,” she pouted.

“You don’t have jurisdiction on this ship, Agent,” Avery sneered, stroking Kendra’s pretty red hair. “Let’s see what this gorgeous earthling body can do.” Fully in character, Avery nodded at me. “Take off the specimen’s clothes.”

Having agreed on our scenario earlier, I eagerly ripped open Kendra’s blouse, letting the buttons scatter. Avery helped me get her pants off, while Kendra did a great job of writhing and moaning in protest.

“Let me go — I promise, I won’t tell anyone in Washington!”

Beneath her pantsuit, Kendra had chosen a plain white bra-and-panty set — a no-nonsense contrast to Avery’s kinky alien getup.

My wife caressed Kendra’s face, pulled her in for a little kiss, and said, “I think you’ll find the hospitality up here is much better than back on Earth.”

Both girls glanced over at me and smiled, and I knew that was my cue.

“Ship controls switch to autopilot.”

I hit a button on my phone that simulated computerized noises.

“That’s right,” Avery said. “We don’t want to be disturbed when there’s a specimen this pretty.” Her long, glittery fingernails peeled down Kendra’s bra straps while they kissed again. “Stand at attention and observe,” she said to me.

“Copy that.”

My cock was already pitching a huge tent in my silver shorts. But seeing my sexy wife working her wiles on another hot babe made me want to blast off.

Avery took off Kendra’s bra and made a show of pulling and pinching her nipples.

Kendra moaned and bit her lip.

Avery glanced over her shoulder at me and noted, “Hmm, these seem very responsive.” She then took one of Kendra’s nipples between her lips and tugged at the other with her fingers. She alternated the actions between the two until Kendra was flushed and desperate.

“Captain, bring me the wand probe,” commanded Avery. “It’s time to test her arousal.”

That was my cue to hand over Avery’s cordless vibrator. At first, my wife teased Kendra with the toy on low while her panties were still on.

“Oh, my God!” Kendra whimpered and squirmed.

Soon enough, a conspicuous moist spot began to appear on the white cotton.

“Hmm, I see some satisfactory progress here.” Avery paused and teased Kendra’s nipples again. Then she told me: “Remove her panties now.”

I peeled away the cotton to reveal Kendra’s flaming bush — complete with puffy pink lips that were swollen and glistening with arousal. 

I watched again as my wife probed her lover’s folds with the vibrator, almost empathizing with Kendra as I reached down to touch my growing bulge.

“Commander,” I said to Avery, “why don’t you proceed with sampling her?”

Avery grinned at me, and even Kendra couldn’t help but look pretty damn excited by the idea. “I think that’s the next logical step, Captain.”

Kendra spread her legs and gave up all pretense of fake resistance as Avery dove right in. She teased Kendra’s outer lips with her tongue while trapping her clit between two fingers.

I love watching my wife eat pussy. The sight of her tongue dipping in and out of Kendra’s wet hole as her thumb prodded the girl’s clit was intoxicating.

“Oh, fuck! Don’t stop!” Kendra cried out, squeezing her sensitive nipples.

“Time to quiet her down.” Avery looked up and gave me a devilish smile. “Have her suck your dick while I work on plugging these holes down here.”

Kendra licked her lips and opened wide for my cock, and with expert gag-reflex control, she swallowed my entire shaft. Careful to read her expression, we got into a little face-fucking rhythm. And while Avery looked on and enjoyed this, she lubed up a metal butt plug.

Kendra’s eyes widened as Avery slid the plug inside her ass. But before I could even blink, my wife had donned her purple strap-on, too.

“I’m ready to sample this earthling’s pussy, Captain.” She wiggled the shaft at me.

I groaned as Kendra reached up to cup my balls while she kept sucking me.

“Proceed, baby.”

Avery winked at me. It was okay to break character at that point. Nothing could kill our incredible buzz.

While Kendra continued to service my cock, I watched my wild wife remove the cups of her teddy and plunge the strap-on into Kendra’s pussy.

I pulled away so Kendra could moan freely and enjoy the dual sensations Avery was providing. But our crafty agent grabbed my dick and kept sucking, teasing the head and jerking me off in time to Avery’s thrusts.

That lasted until I was about to burst. But the girls had other plans, so I pulled back and regrouped while they changed positions. Kendra and Avery made out freely and touched each other before both paused and looked at me.

“I think I’m ready for more,” Kendra said with a grin.

“She’s the most eager earthling ever,” Avery uttered, “and I’ve decided I want her ass.”

“Mmm, it needs a good probing,” Kendra said with another kiss to my wife.

“But I think you should get in here, too, honey. Let’s share.”

With Kendra in the middle, my wife and I sandwiched and double-penetrated our guest. Avery, who’d pulled out Kendra’s butt plug, drilled her ass with the strap-on, while my straining erection finally got stuffed inside our playmate’s slippery snatch.

When Kendra came, her whole body shook. While she recovered, it was my turn to tend to Avery, so I slid inside my wife’s pussy. Eventually, Kendra joined us again by sitting on Avery’s face.

However, after seeing how hard Kendra came, Avery decided she needed to try some double penetration for herself. She cleaned up the strap-on and had Kendra take her pussy — and finally gave me her ass!

“Lube up, baby,” she told me.

“Are you sure?” I asked.

Avery nodded and winked at Kendra in a conspiratorial way.

“Yeah — you’re both going to make me squirt tonight.”

She rode Kendra cowgirl-style and leaned forward so I could pound her ass.

It didn’t take long for Avery to soak the sheets, but once she caught her breath, I had two insatiable babes milking me dry. Mission complete!

The traditional present for a fifth wedding anniversary is wood, and that is precisely what my wife gave me.

The night was such a success that we are already planning more erotic interstellar travels in the future.