My wife's little sister showed us her nipple piercings in the hot tub, then it got interesting.

My wife's little sister Zara has always been a little wild. She screwed her way through high school and has had plenty of shitty boyfriends over the years. When she is with a guy she's unbearable, when she's single she's awesome.

During one of her single periods she invited herself along on a vacation me and my wife were taking. She lived with her parents so was always looking for an excuse to get away. We had a cabin in the mountains, it was really relaxing. During the day we went hiking and we grilled at night. We didn't realize when we picked the place, but they had a deck with a fantastic view and a really nice hot tub. Since we didn't know none of us had brought swimsuits. But was had all know. But I had known both of them since we were kids, so we were all comfortable hopping in the hottub in our underwear.

Zara loves raising eyebrows and was al was always telling crazy stories about the latest shocking thing she had done. Once was that she was sleeping with a married friend, once she was stalking a boyfriend's ex, is was always something. She had recently turned 18 and had celebrated by getting her nipples pierced, and she wasn't shy about bringing it up. She loved to talk about her "his and hers towel racks"

One night were down the mountains at the cabin. We had been out hiking all day and we're looking forward to a nice relaxing night in the hottub. My wife Abby was in her bra and panties. I was wearing a pair of boxer briefs, and Zara was wearing a pair of white cotton panties and and a white cotton tank top. We had all been drinking for a little while. Zara's outfit left nothing to the imagination, and I assume that was the point. After not that long in the hottub, Zara grabbed her tits through her clingy sheer shirt and asked, "Do you guys wanna see em?!"

She was obviously looking forward to this for a while. I wasn't about to touch that in mixed company, but luckily my wife was like, "ummm yeah, of course!" Zara didn't need much persuading, and peeled off her tank top. Being so young, Zara still had perfectly pert shapely breasts. Glistening in the moonlight she held them up for us to see her hard nipples, pierced horizontally with small stainless steel barbells.

I couldn't breathe. Obviously this was amazingly hot, but I was terrified of saying anything, as this could easily go very very wrong very quickly. My wife was pretty drunk so she didn't realize how inappropriate the situation was as she reached over to feel her sister's tits. "Did it hurt? I heard that they keep you turned on all the time. Are they always hard like that now?" My head was exploding.

Zara answered Abby's questions but it wasn't long before the girl's turned their attention back to me. Being pretty drunk I hadn't broken eye contact with the pert young nipples in front of me. Unfortunately I had also developed a massive hardon in the process. There was an awkward silence, followed by uncontrollable giggling. "Wow... That is quite the tent you are pitching" Abby looked over and dropped her jaw. "Are you kidding me?!"

I was leaning back in the tub, but the tip of my erection was breaking the surface of the water while still covered by my wet boxer briefs. I guess she needed to check for herself so my wife reached over and grabbed my substantial erection through my shorts and held it. "Oh my GOD. Seriously!?!" She said without releasing me. "Oh gimme a break... Look at her. You can't possibly get mad at me for getting hard looking at those.. that is not my fault!" Both girls started laughing, however Abby still had a form grip on my dick, and Zara was looking right at it.

"Umm I think you might need to take care of that for him" Zara said while motioning towards my erection. Abby laughed, "Are you kidding, do you have any idea how long it takes to get him off, I'm not going getting into that now!" Somehow I get harder. "Oh puh-lease! it would only take a few minutes if you knew what you were doing." Zara snapped back" "...Oh is that so?" Abby asked. "No offense, but I have been with a lot more guys than you. It should only take 5mins tops." Abby was drunk enough to be intrigued. "All right be my guest, show me how it's done." My soul leaves my body.

"You sure?" Zara asks.... Abby let's go of my dick and motions to Zara to go ahead. Littlerally no one asks me as I sit in slack jawed silence.

Zara instantly switched gears. I was no longer her brother in law, right now I was a conquest. She slid over in the tub and wrapped herself around me. I had my arms on the side of the tub in the most neutral position I could imagine as Zara pressed her tits into me while kissing my neck. She wasted no time getting down my underwear and wrapping her hands around my swollen balls. She had my shorts off in no time, handing them over to Abby who was intently watching the show.

Zara grinded on me pressing her wet cameltoe into my dick before vigorously stroking me while she kissed her way down my chest. She wasted no time getting to my dick, seamlessly transitioning to a blowjob. I raised my hips up so my waste was fully out of the water. Zara had one hand on my balls while working my shaft with the other. Her mouth was magical bobbing up and down in the water as her tongue lovingly caressed the sensitive area under the head of my penis. I did my best to avoid eye contact during the spectacular blowjob, but it was a wasted effort... Abby wasn't looking at my face, she was focused on the artful sucking in front of her.

Right on schedule at around 5 mins, my cock started to throb. To her credit, Zara never broke contact as I pumped a sizable load of warm semen directly into her mouth. When I finally finished squirting Zara raised her head, with an ear to ear grin. She looked at both of us and slowly let my cum pour out her mouth, down her glorious pierced tits, and into the hot tub. Abby raised her arms for a dramatic slow clap, "wow... THAT was impressive."

We spent another hour on the tub. Neither me or Zara bothered to put anything back on. Later that night in our room, Abby came into me hard and had me fuck her roughly. Being that I had just cum I lasted way longer than I usually do. We all slept in late the next day.