Karthik's PoV:
Ding dong
I heard the door bell. Sara who was rubbing my dick had stopped and i heard her running.
I stood up. I pulled up my pants from my tied hands halfway and i ran towards my bedroom.
Karthik's Mom's PoV:
After going to temple i decided against visiting the mall for shopping.
I decided to go back home instead and have a hot shower.
I had the keys so i didn't care to ring the bell.
I opened the door slowly only to see the sight that I shouldn't have seen.
I saw naked Sara sitting on my son naked with her naked body wrapped around him. Karthik for some reason was blind folded. Sara's Beautiful ass was in my son's lap grinding.
Sara wasn't blindfolded and i was facing her back. They hadn't hear me enter.
Then i saw Sara holding her breast in her hand and placing it in from of Karthik's mouth.
My innocent image of my son was gone. He was no more my baby boy but a breast licking adult.
I went outside the door, pulled the door while simultaneously ringing the door bell.
I would have been embarrassing to both of them if i had walked on them. The image of me having seen him hugging a naked girl would have been imprinted on him. He would feel guilty.
Karthik and Sara both were almost an adult. It would be wise to give them space.
I opened the door after 10-15 seconds giving them some time to alert them back to the bedroom.
I entered the living room. They weren't on the sofa. I heard a thud sound from Karthik's door for being shut.
I realised both were now in the bedroom.
I knocked on Karthik's door in about five minutes telling him that i was back and i was going for shower.
I did that intentionally so as to give Sara some time to go back to get flat.
I remembered Sara was alone at her home. Yesterday Karthik had made an excuse that he was going to her place to watch movie. I imagined what movie they saw togather in each others company. They were surely doing similar to what i just saw, naked and touchy.
I couldn't imagine my son's penis being held by this Sara. My son was always delicate. The way i saw her grinding his lap, I doubt if she'd be gentle. Girls these days want something or another to grind between their legs. Disgusting.