I ran out of my room, cum running down my leg, and tried to catch up with Mom. I found her at the bar in the kitchen trying to open a bottle of scotch with trembling hands. She wasn't much of a drinker, but I figured she needed it so I took the bottle and opened it. I fixed us both a stiff drink and sat down next to her, she didn't say anything about me fixing myself a drink.
"You have to calm down," I told her softly.
"Calm down? How in the hell am I supposed to calm down when I just learned my husband has been cheating on me? With his own Mother no less," she replied angrily.
"You don't know that Mom. That could have been anyone on that video," I rationalized.
"It was Frank," she insisted.
"You can't be sure of that. They didn't call him by name. That could just be how they talk, you know, just like how they call each other ma and pa," I said.
"I didn't need to hear his name. Besides, you heard him call her Mom," she said, then downed her drink in one gulp.
I poured her another one and sat quietly waiting for her to calm down some. The scotch burned my throat as I sipped my drink and rubbed her back soothingly. I hadn't seen her this upset in a very long time, she was positively fuming with rage. She took another drink then turned to face me.
"How could Martha have sex with her own son?" she whimpered.
"I don't know Mom. But if you think about it, what we just got through doing could've easily gone in that direction too."
"Oh God...you're right. I'm so sorry baby, I can't believe I let myself get carried away again," she began to weep.
"It wouldn't have happened if Dad was taking care of your needs like he should," I stated.
"That's not the point Russell. I'm your Mother, I shouldn't have let you touch me like you did."
"I don't regret it Mom. I've wanted to touch you for a long time," I whispered.
"What? You have? Oh honey, you shouldn't think that way about me. We're family."
"So's Grandma," slipped out.
"What's that supposed to mean?" she asked, giving me a wide-eyed stare.
"Um...there's something I need to tell you," I stuttered.
She sat stone-faced while I told her everything that had happened between Grandma and myself. The only reactions I got from her were a stiffening of her nipples and a few "Oh My Gods" as I described in detail my exploits. Her face became flushed when I described how I had gone down on Grandma in the attic. I couldn't stop talking until I'd finished telling her everything, including my penchant for watching incest videos online. When I finished we both sat there just looking into each other's eyes.
"So let me get this straight," she finally said. "Martha forced you to have sex with her?"
"No Mom, she didn't force me to do anything. She offered and I accepted."
"She just spread her legs and said fuck me?" I could see she was having a hard time digesting the whole thing.
"She asked if I wanted to and I said yes."
"And it didn't occur to you how wrong it was? My God Russell, she's your Grandmother for crying out loud!"
"I know that Mom, but I couldn't help it. When I saw her pussy I just went crazy." I was sure my reasoning for fucking Grandma wasn't going over too well with Mom.
"I see. So if I were to spread my legs and show you my pussy, you'd go crazy on me too?"
I took a big drink before answering. "I wouldn't do anything you didn't want me to Mom. But if I had the chance to make love to you, I definitely would."
She lifted her glass to her lips with one hand and brought her other hand up and clutched her chest. I could see the wheels spinning in her soft brown eyes. She ended our conversation by telling me to go take a shower; apparently I was getting a little ripe. I downed my drink, gave her a quick hug and left her sitting there by herself.
As I stripped in my room I realized the smell of dried cum was pretty strong on me. A shower was definitely called for. For twenty minutes the water cascade over me while jumbled thoughts ran through my head. I was more confused than ever by the time I was dried and dressed. I needed answers. Answers to questions like; 'Was that really Dad in the videos?' And if so, 'Why had Grandma let him, and me for that matter, have sex with her?' The only problem with getting answers would be that I'd have to ask her. If I did that then I'd have to let her know about the videos, because I'm pretty sure she'd want to know how I knew about her and Dad. I headed back to my room pondering whether or not to ask Mom for advice on what to do. I wasn't sure if she'd give me any, but I had to at least ask. I didn't have far to go to ask her, she was sitting at my desk when I reached my room. The laptops screen had a frozen image of the last video we'd watched. Mom had paused it at the point where the guy was lying on Grandma with his face turned away from the camera.
"Mom, what are you doing?" I asked nervously.
"Proving to you that this is your Dad. Come in and close the door," she replied.
I did as she instructed and went and stood behind her. She started the video and pointed to the guy's left shoulderblade. I had to lean in closer before I realized what she was pointing at. The guy had an inch long purple birthmark just below where his shoulder sloped down toward his back.
"Look familiar?" she asked.
"Not really," I told her.
"Then I suggest the next time your Father has his shirt off around you, you take a good look. He has that exact same birthmark!" she spit out.
Truthfully I'd never noticed. In my nineteen years of life I think I'd only seen him shirtless once or twice, and that was when I was quite young. Most of the time he wore t-shirts, even when he went swimming. Something I never understood, but hey, who was I to judge.
"That still doesn't prove it's him Mom," my own confidence was beginning to wane.
"It does to me," she retorted, then stood and headed for the door.