Monday morning was crazy. One bathroom and four people needing to get ready. We did not plan ahead or even think about it. No one got up early so we all needed to shower at the same time, which according to evil Peter was a terrific idea, he wanted to fuck all three of them at the same time in the shower but of course that wasn't about to happen.
"It's fine, Peter... I'll just shower tonight... that should help for tomorrow morning," Becca was saying as we stood in the hall outside the bathroom. Just then Tiffany came out of her room. So apparently it was Mom in the shower.
"Oh great... we didn't think this through. Did we?" Tiffany said coming up to Becca and I.
"Nope, we didn't," I said.
"Well, I guess I'll just shower at the gym after class," Tiffany said, going back to her room to dress.
She was just wearing a robe, and evil Peter surmised she was naked underneath, which she probably was.
"Still my sister, dude," I said to him in my head.
"Yeah, your very fuckable sister. Her ass looks amazing even in a robe," he said as we watched Tiffany return to her room.
"I'm going to go back up to the attic to get dressed," Becca said.
"Okay, I'm going to wait for the shower... Mom's usually pretty quick," I said.
Becca gave me a little peck on the cheek and headed back up to her/my room. When she was gone, I picked the lock and went into the bathroom with Mom.
"Room for one more?" I asked, sliding back the shower door.
"Peter! Oh you scared me... what are you doing in here?" she asked, covering her big tits with her arms and then realizing it was silly.
"Tiffany's going to shower at the gym after class, Becca went back up to the attic to dress and says she'll shower tonight so I let myself in."
"But what if someone figures out you're in in her with me?" she asked, as I dropped my pajama bottoms and underwear to the floor and stepped in to the warm shower.
"You're almost done, you can sneak out before anyone notices," I said.
"Oh, so you just came in to wash... nothing more?" Mom asked, looking a little disappointed.
"Well... I'd love more but then we'd for sure get caught."
"True... it's just... well, seeing you like this... it's difficult not to... to want... to..."
"Even after last night?" I asked.
"Let's just say I'm in my prime, Peter... I'm running hot... if you know what I mean," Mom said, looking me up and down.
"Oh... I didn't realize... at your age?" I asked.
"Yes, women hit their sexual prime later than men... so we're kind of hitting it at the same time together?" she said.
"Right... wow... so I probably shouldn't have come in here like this."
"Well... maybe... maybe not... we might have time for a quickie..." Mom said, grinning at me.
My cock lurched as I stood a foot away from her as the water cascaded down over her body. When it started to grow rapidly her smile got bigger.
"That's my boy," she said turning around and presenting her round bottom to me as she bent over slightly.
I took a step forward, grabbed my almost fully hard cock and ran it up between her legs. Finding her sex, I fed my cock into her as the water sprayed down onto both of us. My body hit her ass as I buried my long cock deep. We both moaned and she looked over her shoulder at me.
"Don't dilly-dally... we don't have time... go hard and fast!" Mom said, trying to keep her voice down.
I reached around and grabbed both her breasts in my hands and started pounding her hard and fast like she told me to do. It felt so amazing, mashing her huge breasts in my hand and slamming as fast and as hard as I wanted. She loved it... wanting it even harder than I could manage standing up like we were. I suddenly felt her hand working her sex as I continued my rear assault on her round butt. I felt her nipples harden under my palms as well. She was working herself up, trying to cum in the short time we figured we had.
"Yes... yes... Peter... don't stop... don't slow down... you're going to make mommy cum... you're big cock filling me so full... oh... my... oh... here it comes," she said, as her body tightened up as her hand went ballistic on her sex.
I was on the verge myself, just the very circumstance I was in made that possible. When her pussy started to spasm on my cock, I reached my own climax and blew my load inside her as we came together in the shower. We tried to stay quiet, but still moaned amid the water running as our bodies shook and convulsed together. My cock contracted over and over sending my load deep inside her, which felt phenomenal as I moved only an inch or two as I ejaculated. Her orgasm milked my cock as her pussy spasms massaged my spewing cock.
"That was perfect, Peter... just what I needed again... you're taking good care of me," she said, standing upright and tuning around.
She gave me a big hug, smashing her wet body against mine. She broke the embrace, cleaned herself out in the water and quickly got out of the shower.
"I hope I can sneak out okay," she said to me as she went to the door.
I quickly began washing myself, hoping no one would catch her because that would be difficult to explain to either Tiffany or Becca. I didn't hear any commotion after she left, so I figured she made it to her room okay. My cock shrank down in the warm water and I finished showering. Turning off the water, I parted the shower door to grab my towel and Becca was standing there holding it. I hadn't heard her come in. She must have missed Mom by maybe five minutes at the most.
"Door was open... you don't mind do you?" she asked, holding out the towel.
"No... it's fine," I said reaching for it but she pulled it away and stepped back, giggling.
I stepped out of the shower naked and wet, which was what she wanted me to do. She bit her bottom lip and looked me up and down.
"Mmm, you look yummy like that," she said, standing with my towel fully dressed.