My wife, Lynn, believes that holidays and long weekends are meant to be shared with family, so this Labor Day, she invited my brother, Brian, and his wife, Jen, to join us at our cabin in Northern Wisconsin. We drove up together late Friday night and arrived with just enough time to unpack and have a nightcap before bed. The ladies went to bed after one drink, but Brian and I sat up for one more to unwind from the long drive.

The guest bedroom sits perpendicular to the cabin with its window facing our deck, so it surprised me when Jen didn't pull the blinds when she started to undress. She had to have seen me sitting there. I mean, I was practically facing the window. I pretended not to notice as she stripped down to her panties, but I caught everything out of the corner of my eye. My brother had his back to her and was clueless about his wife's exhibitionism. I was so turned on by the time I went to bed that I rolled my wife over for a quicky before she could fall asleep.

Brian and I started drinking early, having Jameson with coffee before heading out to do some fishing. Fishing was a pseudonym for drinking beers while we drowned worms. By noon, we were out of beer, but we'd caught our limit of walleye. As always, Brian will fry them up for dinner tonight. I could do it, but the way my brother does it always tastes better.

The wives had put a dent in the beer reserves and graduated to mixers by the time we got back to the cabin. The two were in their bikinis, sunbathing. Well, half their bikinis anyway.

"What the fuck, Jen?" Brian barked at his topless wife.

"Welcome to the Tits Out Tanning Salon!" Jen slurred her reply.

Jen always got crass and flirty when she drank like this, so it was no surprise that she talked my wife into topless sunbathing.

"I don't need my brother eyeballing your tits, so put them away."

"He's seen boobs for cripes sake!" Jen laughed, holding up her tits and yelling, "Look, Paul. Boobies. Boobies, Boobies!" She slurred worse than Foster Brooks on Dean Martin's celebrity roasts.

My wife looked back and forth between her chest and Jen's a couple of times and frowned because she didn't have enough to jiggle around like Jen did. She definitely noticed that I couldn't keep my eyes off my sister-in-law's tits. How could I? Jen had a big of pair of melons on her, almost double the size of my wife's tits. I heard Homer Simpson's voice in my head, "Mmmm. Boobies. Nom, nom, nom!" Unfortunately, it came out of my mouth as well. "Boobies. Nom Nom, Nom." It was enough to make everyone laugh and ease the tension.

Towards evening, Brian started to cook dinner, showing Lynn what he does that makes the fish taste so good. I was behind the bar, adjacent to the sliding patio doors, watching the weather when Jen came in.

"Another one?" I asked.

"I want something different."

"I got just the thing," I said, as I went to the kitchen for some ingredients.

I mixed RumChata, vanilla vodka, Blue Curaçao, and grenadine, often served in a glass with a Fruity Pebbles cereal-rimmed edge. "Voila! I present to you, The "Wife Swap."

Jen laughed, "You guys aren't into that sort of thing, are you?

"Oh, god, no! Lynn would never." I shook my head, no. "I've never thought about it."

I already knew that my brother wouldn't do something like that either.

"Is this really a drink, or are you just making that up?" Jen asked skeptically.

"No. It's a real drink. You can look it up, but if you don't like it, I could always whip up a blowjob shot for you."

Jen leaned over to peek out the patio doors to see if anyone was looking. "Why would I settle for a shot when I can have the real thing?" Jen said as she dropped to her knees behind the bar. "Don't be shy, Paul. I've wanted to puff your pecker for years now. And from the way you've been ogling my tits, you've wanted some of this, too." Jen pulled her tits out of her bikini top. She held one up to her lips so she could suck on its nipple. "Just act like you're watching TV and I'll do all the work," she said as she pulled my shorts down to my ankles. I glanced down as she wedged my cock between her tits. "You've had dreams about these, haven't you?" she purred. Her tongue swirled the tip of my cock, teasing it as it grew.

Her lips closed around the head of my cock as she flicked it with her tongue. She began to take me in and out of her mouth while she sucked gently. Jen's tongue licked along the vein of my blood-engorged member with each stroke of her mouth. My brother was a very lucky man to have a wife with such a talented kisser.

I stood there, stoically, as I pretended to watch the news. Behind the scenes, I had my hands on the top of Jen's head as I thrust my hips to meet the motion of her mouth. She cupped my nuts in one hand while she rubbed my taint with the fingers of her other. Jen tilted her head slightly as if eating a taco while she pressed the head of my cock against her uvula. There was nary a gag as she slipped the head of my cock into her throat. She bobbed her head a few times on my shaft before taking me out to the tip. After taking a few quick breaths, she crammed my cock back into her throat.

My knees quivered like crazy while I fucked her throat. 'Sweet Jeezus. She'd make a fortune if she could bottle this!' I thought. If only there were a way for her to teach my wife to do this. "Ffffuuuck," I gasped as Jen quickened the pace.

The sensation of my cock going into her tight little throat was too much. There was no holding back the ensuing torrent that I was about to unleash into her mouth. "Ahh, God, Jen!" I blurted out as I came. Multiple splurts of cum poured into Jen's mouth. She tried to gulp it down as quickly as I came, but cum dribbled out of the corners of her mouth and down onto her tits. I couldn't control myself, and bucked my hips to her face. Bang, bang, bang. I drove my cock into her throat, humping her until my cock went limp.

I checked to see if the coast was clear and dropped to my knees, burying my face in her breasts. I sucked her cum soaked nipples into my mouth, flicking them with my tongue. "Oh my fucking gaaahd, can you suck cock!" I said, pressing her tits to my face. Jen opened her mouth, showing me my load of cum before gulping it down. She then reached for the drink that I made and chased down my load of creamy cum by slamming The Wife Swap.