It was time for another bath for my sisters, mom, and I. After a national water shortage, we had to be very stingy about water consumption. To relieve some of the waste brought upon by individual showers, my mom decided a family bath time would fix the issue. However, letting three young adults get naked and share a bath together came with its own set of "problems".
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"Jack!" my sister Emily said, giggling. "Stop rubbing that hard thing in between my ass and actually wash me!"
"I'm not, it's just hard leaning into you without it sliding in." I replied.
I promised I'd wash her back, but I kept getting hard when she turned her back to me. It was hard not to be aroused with her big ass directly at dick level. She was bent over slightly, her arms at the edge of the bath. Her perfect butt was sticking out, giving a little wiggle to taunt me. She loved teasing me, but I loved teasing back.
I stood with a small bucket filled with warm water, leaning into her to pour it on her back. It dripped down onto her asscheeks and my cock, that was nestled in between them. The soapy water made a nice lube for me to slide back and forth. Her asshole made a little wet pop, the suction of my cock head against it. I slid my dick down a little further, my head touching her vulva and inner lips.
"Jack..." she said in a breathy voice. "Jack..."
She said my name as if she was asking for something. Asking for me to slide my cock into her. I grabbed the base of my cock, and guided it right at her opening. Just a little push and I'd slide right in.
"Jack, Emily!" Mom yelled. She stood at the doorway in her towel.
We both turned our heads to face her, we were caught.
"First of all, you two don't wait for us to get started, and then you start- start this smut?"
My dick twitched, my hot head pressing against Emily's wet pussy lips. God damn, how I could easily just push in and slide myself in her hot cunt.
"S-sorry mom!" Emily straightened herself out and turned around, my erection sliding off her butt. She sat herself into the tub and brought her knees to her chest to hide herself.
"Jeez, mom we were just-" I started.
"No, Jack. You two are taking advantage of the fact we have to bathe together. Our naked bodies should not be used to pleasure each other! She's your sister for god's sake."
Some irony coming from mom, who made me cum in between her ass our first time we bathed together. After that though, I got nothing else. The bath time after that, my sisters and I tried to mess around to no avail. She'd stop us every time, suddenly acting like it was wrong. What was wrong with my hard cock nestled in between my sister's asscheeks?
Regardless, it didn't stop us from eyeing each other's bodies down. Even mom still made the occasional glance and my cock here and there, so I didn't get why she was so against it all of a sudden.
Mom's policing never stopped Emily from wanting to mess around though. She'd never seen a dick before mine and was massively curious. I had my suspicions that she was still a virgin, and I was her ticket to losing her v-card. Lately, we'd been teasing each other hard in the bath when no one was around, today being the closest to my dick entering her.
A week ago I wouldn't had even thought of fucking my little sister, but now, her thick ass was all I could think about. Most nights I'd jerk off to my personal spankbank of earlier in the bath. Emily bending over in front of me, 'cleaning' her butt while actually sliding her fingers in her pussy, her squeezing her chubby tits while eyeing me down, staring me down at while I slide my cock up and dow-
"Jack! Are you listening to me?! Christ. Keep that thing down, some of us will want to bathe in peace." I honestly didn't understand why Mom was so cold so suddenly.
As she tossed her towel to the side, I eyed Mom's body, the basic reaction to a thick woman disrobing in front of me. I noticed her pussy was shaven, it seemed fresh. She always had a bit of a bush, so to be clean shaven was new. I looked up to meet her eyes, where she met mine, then turned away. I think she was hoping I'd notice.
Mom entered the bath, her head turned away from me, as I still wondered what her deal was.
Claire appeared at the doorway and entered the bathroom. "Are you guys starting the bath?." She was already naked, just carrying a towel in her hands. "Oh, is Emily going to be Jack's partner today? Guess I'm doing you, Mom."
My sister Claire was feeling pretty liberal with the clothes wearing lately, her shyness from the first night faded quickly. I'd often catch her around the house wearing a little t-shirt and nothing else. Most of the time her nipples would poke from under the shirt, with her tight, tiny butt and smooth shaven pussy on full display almost all the time. Whenever anyone brought it up, she'd just smile and say "You're gonna see it later tonight anyways."
She walked into the bath facing Mom, though she missed our little conversation. She noticed the mood was a bit off today, questioning us as she started lathering her hands up and automatically worked Mom's shoulders.