For a long moment an uncomfortable silence hung in the room, a ball of ice forming in my stomach, and probably in Cynthia's too as Aunt Julie glared at us as we scrambled to cover ourselves with the blanket.
"Mom, I can explain." Cynthia finally said when she was sure she was covered up.
Aunt Julie crossed her arms under her impressive bosom and leaned against the wall with a "this should be good" look on her face and made the "get on with it" hand motion.
"Well, it's like this. I was upset over my breakup with Jason, so Brian was just trying to make me feel better."
"With his dick?" Aunt Julie shot back looking directly at me. "You know Brian, when I promised your mother, my sister, on her deathbed that I would adopt you and raise you, this was NOT what I had in mind."
Wow, she was laying the guilt on thick.
"Aunt Julie, it just kinda happened. It wasn't entirely my fault, and it wasn't entirely Cyn's fault. It was... kind of a mutual thing." I said.
She rolled her eyes before turning her glare back on us. "How long?"
"About a month now." Cynthia said.
"Jesus..." she muttered under her breath. "So this whole thing started while I was out of town?"
We nodded. As she chewed on this fact the look on her face went from anger to... interest? Excitement? A little of both?
"Might as well see what we're working with."
She crossed the room to the bed, and without warning grabbed the covers and tossed them back exposing the both of us.
"MOM!" we both yelled at the same time.
"What are you doing?" Cynthia asked, trying to cover herself with her hands.
"If you're going to be fucking each other, I might as well make sure you're doing it right."
Then, to our surprise she pulled the nightshirt off and tossed it off to the side, I'm surprised my eyes didn't bug out like a cartoon character. Despite the fact that Aunt Julie had turned 50 a few months earlier, she had the body of a woman half her age. She certainly did not look like a woman who should have a 20 year old doppelganger of a daughter. Her body was firm and well toned due to her going to the gym twice a week. I could also see Cynthia was right about Aunt Julie's tits. They were at least a full cup size bigger, but just as firm. She shimmied out of her panties and casually kicked them off to the side as my eyes traveled from her magnificent tits to the perfectly trimmed triangle between her legs.
"Move over." she said to Cynthia as she crawled onto the bed and sat between us. She reached down with her right hand and grabbed my now fully erect cock, and licked a couple of fingers on her left hand and reached between Cynthia's legs. Then she started simultaneously masturbating the both of us. I couldn't believe it, and from the look on Cynthia's face, neither could she. Just two minutes earlier Aunt Julie was giving us a death glare because she caught us in flagrante delicto, now she was taking charge!
I watched her massive tits jiggle as she manually pleasured the both of us. She was looking back and forth between my hard cock and her daughter's soaking wet pussy. I reached out and tried to get as much of one of her huge tits into my hand as I could. It turned out to be not much, I would need two hands just to handle one of her magnificent melons.
She leaned down and took my cock into her mouth, and my eyes rolled back in my head.
"Holy shit that feels good." I moaned.
I couldn't enjoy it for long though, as she turned her attention to Cynthia and started eating her daughter out, earning that squeal I loved getting out of her when I went down on her.
"Holy fuck mom... I had no idea..." she gasped.
"Well you're gonna learn." Aunt Julie said, as I pulled myself up to a sitting position to get at her tits. She realized what I was doing and pulled me in for a kiss first. I'll say one thing for my aunt, she had an AMAZING tongue.
"Hey, I want some of that too!" Cynthia said, sitting up as well. Aunt Julie and I disengaged and Cynthia moved in to kiss her mother while I leaned in to get as much of her tit as I could in my mouth. Again, not much (I found out later they were 40DD). But that didn't stop me from trying. Her nipple stood out like a pencil eraser as I teased it with my tongue.
"I knew something was going on between you two." She said when she and Cynthia broke their kiss.