Author's Note:
For those of you who were wanting a part 4, here is it. Sorry it took so long, real life got in the way. Hope you enjoy it.
*****
As summer turned to fall, I started college. Since I already had my license grandma Rosie let me borrow her car to get to and from school. We had kept up our nightly sessions, with me fucking her silly almost every night, and sometimes a quickie in the morning or afternoon if I didn't have class that day.
One day, after one of my professors hit us with a pop quiz, I headed home looking for the release that could only be found between grandma Rosie's legs. As I walked into the house I heard her voice coming from the den.
"... doing well as far as I know. If he wants to tell me, he'll tell me." she said. Must be talking to my mother.
I headed into the den and saw grandma sitting in her easy chair, dressed in a pair of sweatpants and a faded tie dye t-shirt. She smiled and mouthed the words, "Your mother". Then she turned her attention back to the call. "Yeah, honey, in fact he just walked in. Hang on."
She handed me the phone. "Hey mom."
"Hey kiddo," she said "How's it going? How's college life treating you?"
"Pretty good so far, I guess," I said, "Haven't been having any problems. I'm doing good in my classes. Getting around the campus is still a bit confusing. But other than that, it's fine."
"So, I have good news. My case is done."
Suddenly I felt grandma's hands on my legs. I glanced down and saw her hands going for my belt.
"Uh, that's great mom," I said as grandma Rosie got my belt undone, "Did you win?"
"Of course we did!" my mother said proudly, "It took longer than we thought, but we won."
Grandma unbuttoned my pants, pulled down my zipper and freed my now hard cock from my boxers. She stroked it a few times as she smiled up and me and then swallowed as much of my cock as she could fit in her mouth.
"Again, I'm not gonna bore you with the details, but that's not the good news. The good news is, I have four weeks of paid vacation saved up, and I'm heading down to spend all four weeks with you and grandma! Isn't that great?"
"Oh yeah," I said, trying not to moan in pleasure, as my grandmother started to give me one of her amazing blowjobs. "Sounds great."
"You don't sound too thrilled."
"Sorry mom, just had a really hard test." I said. (I'm also trying not to cum in your mother's mouth because she's sucking my dick.) I thought.
"So how's it living with grandma? You two still getting along okay?" mom asked.
"Yeah, it's great. Some of my friends think it's a little weird, others think it's kinda sweet." I said putting my free hand on the back of grandma's head and controlling the pace of her cock sucking. If I was gonna get through this phone call I had to make sure grandma wasn't gonna make me cum while I was talking to my mother, "Then again most of my friends are probably picturing a sweet, white haired old woman who spends all day baking and has 57 cats."
My mother laughed "Yeah, you grandmother is definitely NOT your stereotypical grandma."
"No she's not." I said looking down watching as my cock slid in and out of her mouth as I controlled the pace. She looked up at me, and I could see a devious twinkle in her eyes. "So when are you gonna be here?"
"In about a week." mom said, "I need to get things together on my end, and then I'll let you know for sure."
"Sounds good. Talk to you later mom."
"Bye sweetie, I love you."
"Love you too, mom." I said, "Bye."
I hung up the phone and looked down at grandma Rosie, as I kicked off my sneakers and pulled my clothes off. "You're evil."
"You handled that better than I thought," she said stripping off her own clothes to show off her magnificent body, "Now, I'm gonna finish what I started."
She went back to work on my cock, this time controlling the pace herself, using her lips, tongue and hands to tease me and bring me to the brink of orgasam before slowing down the pace and starting all over again. I reached down and fondled her huge tits as she kept sucking my cock. Just when I thought I couldn't take anymore, grandma stopped teasing me.
"Oh, fuck grandma... I'm gonna cum..." I moaned, feeling the familiar tingling in my balls.
Grandma Rosie pulled my cock out of her mouth and started stroking me aiming the head of my cock at her tits. I groaned and exploded shooting several strong jets of cum onto her firm tits. I took a moment to catch my breath as grandma scooped some of my cum off her tits and licked her fingers clean.
"I needed that." I finally said when I could catch my breath. "But what are we gonna do when mom gets here? I mean she's gonna be here four weeks. I can't go without fucking you for four weeks."
"Who said you have to?"
"Wait," I said, "Grandma you're not seriously suggesting...?"
"Why not? You're already fucking me. Why not your mother? You can't tell me that in all this time you've never thought about it."
She had me there. "Well, now that you mention it, sure I have. But, for starters she'd never go for it," I said picking my clothes up off the floor.
"You leave that to me." Grandma Rosie said, "I told you before, I can talk your mother into anything. Plus, I've always fantasized about another woman, and who better than my own daughter?"
"All right," I said, "So what's your plan?"
My grandmother had a devious mind.
A couple days later my mother called back to confirm when she'd be coming to visit.
I had to admit to myself that up until recently I had never thought of my mother sexually. I know she dated for a couple years, I think she was trying to find me a "father figure" since my biological father had walked out on her. She stopped dating after my grandfather died and instead focused on her career. Mom never dressed sexy, except for the dates she went out on, but I was too young to really remember that. Most of the time I either saw mom dressed for work in suits, or at home in just a t-shirt and sweats. When she and I would go out it was also just a t-shirt (weather permitting of course, colder weather called for a sweater or jacket) and jeans. Now, however, I was wondering what was hiding under those clothes. If grandma's plan worked I'd find out soon enough.
About a week later mom arrived. I guess I never really described my mother Diana before. Just like grandma Rosie she was short, standing just an inch taller than grandmas 5' 6", and where grandma had naturally red hair, my mother's was more of a brownish red, depending on the light. Her eyes (and mine for that matter) were hazel compared to the bright green eyes of grandma Rosie (we had inherited my grandfather's eyes). In their faces you could really see the resemblance between them. There was no mistaking the fact that they were mother and daughter.
After we exchanged hugs and got my mother's bags we headed back to grandma's place. All three of us talking over each other as I drove us back to the house.
I started looking at my mother in a new light in the first couple of days. She didn't change the way she dressed or acted, but I noticed things about her I didn't before. It was little things. The curve of her neck, the way she talked a lot with her hands, the small Pisces tattoo on her ankle, the way she would tuck errant locks of hair behind her ear. Like I said, little things. It was also unbearable not being able to fuck grandma during those first couple of days. Going from fucking someone every day to having to masturbate to get release (and since internet porn wasn't a thing yet, I had to use my imagination) was like going from eating steak all the time to suddenly having to eat peanut butter and jelly sandwiches. You still cured your hunger (for food or sex), but neither the journey or the conclusion were all that satisfying.
When mom and I visited in the past, I would usually sleep in the guest bedroom (now my room) with mom, until I was old enough to sleep alone, and then I slept on the fold out couch in the den. Now, since the guest bedroom was my room (even though I never actually slept there anymore) we had to figure out new sleeping arrangements.
"I'll sleep on the couch mom," I said, "It's not a problem."
"No, honey," mom said, "I'm not going to kick you out of your room. I'll sleep on the couch."
"Nonsense," grandma Rosie said, "There's more than enough room in my bed. You can sleep in my room. Unless you think you're too old to be sharing a bed with your mother."
"You don't snore, do you mom?" my mother jokingly asked.
"Then it's settled." grandma said.
Like I said before, those first couple of nights having to take matters into my own hands were unbearable, but grandma had a plan. On the fourth day of mom's visit I passed by the bathroom one night while my mom was taking a shower. Like the time I spied on grandma Rosie, the door was open just enough for me to peek in without being seen, and the shower curtain wasn't closed all the way and for the first time I saw my mother naked.
"Wow." I whispered as my I felt the blood flow to my cock.
My mother had an incredible body. I knew she went to the gym twice a week, but I had no idea just how in shape she kept herself. Her work suits and baggy relaxing at home clothes hid a tight, firm body. Mom's back was to me as she was shampooing her hair, and I watched mesmerized as the shampoo ran down her back, over her incredible ass, down her long legs and into the tub. Without even thinking about it, I pulled my cock out and started stroking it.
"Alex, could you..." Grandma said coming down the hall, her words catching in her throat when she saw me.
With my free hand I shushed her and then waved her to come closer, never stopping with my other hand on my cock. She crept forward and peeked in.
"You little pervert." she whispered, smiling up at me.
"Wait a minute... grandma, is she...?"
The shampoo totally rinsed out of her hair my mother's hands were busy between her legs. As we watched her hands speed up it was clear my mother was masturbating. Furiously. Grandma undid her pants and got a hand busy on her own pussy as she watched her daughter pleasure herself.
