Dad came back home after work earlier that day. I was acting like a child and kept playing my role.
"How is our son, honey?" Dad asked as soon as he came home.
"He still doesn't remember. But I am encouraging him to do things by himself as the doctor suggested" Mom replied
"Good."
"He is still a child so we have to be careful about some things."
"Correct honey, it's not good for him. While going out, be careful."
"That's why I keep him close by."
"Don't tell Ayesha about him yet. She will worry and it will affect her exam."
"I didn't tell her. Don't worry."
I hugged her from behind in front of dad and he didn't mind it. I was poking my dick in her ass.
After that, we went to the kitchen. "Son, it's dangerous to do things like that."
"Don't worry, Mom. Dad is still convinced my memory is lost."
"Yeah but still we have to be careful.
"Mom I want to fuck you in front of dad."
What? How is that possible?" Mom asked in surprise.
"I have an idea. But you have to help me and go with the flow."
Mom gulped as it was really dangerous. Her husband could be manipulated into fucking in front of his son but letting his son fucking his own wife, that almost seems impossible.
"Ok, but I will stop you if I think it wouldn't work."
Night came. Dad and Mom entered their room. I followed them and said, "Mom, I am scared."
"Come here honey, I told you not to watch that horror movie." Mom hugged me in front of Dad. "Come sleep with me."
"Honey, what about us?"
"What?"
"I need some time with you."
"Don't worry we can do it after he sleeps."
"What if he wakes up and feels scared by your moaning?"
"Don't worry. I will handle it. And it's not like he hasn't seen us. What's more, he is now a child. Didn't you fuck me in front of him when he was a child? Just let me handle him."
"Mom, what is fuck? I want fuck."
Mom smiled and said "It is love honey."
"Then I fuck you too."
"Yeah."
Mom smiled and giggled. Dad laughed too.
It is going on as per my plan. I know Dad will try to fuck that's when I will act.
I acted like I was sleeping immediately.
Dad checked me and went straight to fuck mom in the pussy. He was fucking her hard as I was there which got them hornier. Mom tried to hold her moan but still she slipped. That's my cue I acted while waking up.
"Mom, I heard a sound."
Mom and Dad stop. Dad stop moving and keep still.
"It's nothing, honey." Mom quickly consoled me.
I came towards mom and hugged her in front of dad. Mom was naked.
"I am afraid I heard a sound."
"No honey it is nothing."
Mom moved Dad from her and then turned on the night lamp. Mom lay down and I was on top of her.
My head was near mom's nipple. I started sucking her boobs in sleep in front of dad.
"What the hell is he doing? He is a grown boy!"
"Come on, honey. Do you forget he is a small child in his mind? And after all the act we did in front of him, this should not surprise you."
"But…"
"No buts. He is our son I fed him when he was born. There's nothing wrong about it."
"Yeah, you are right it's all because of the memory loss."
To my surprise, Dad got a crazy idea.
"Hey, I got an idea. I will take a photo of him sucking you and make fun of him when his memory comes back."
"Ok take the camera."
But I stopped sucking and acted as if I was sleeping.
"Oh no, he is not sucking."
"Nice try, we may get another chance some other time."
"Just wake him up and tell him to suck your tits."
Mom looked at Dad and said "Aren't you enjoying this?" Dad smirked and said "Oh, as you said, after all the things we have done in front of him, we should save some memories for him and tease him later."
Mom woke me up. I woke up acting drowsy. She placed the nipple near my lip and said suck it. I started to suck again in front of dad and he was recording it.
"Stop taking videos. Enough, I feel shy."
"Come on honey, it's just for fun."
Dad stopped recording after a minute. He then pointed at his dick and asked "What about this?"
"Can't you sleep?"
"Come on. Help me, please." Suddenly, Dad got an idea and suggested "Let's do it with the mouth."
Mom looked at Dad and said "You truly get excited by making me do shameful acts."
Dad smiled innocently. Mom shook her head and agreed.
Dad instantly became happy and moved towards Mom. He stood near Mom's face. Mom grabbed his dick and started to give him a blowjob while I was sucking her boobs.
The visual experience made both of them excited.