I become the Lab Test Dummy!

I enter the Lab and get given an Employee badge saying I am Jessica's son and that I am technically an Employee. I go to my mom's office and she tells me that I am free to roam the building for the next 2 hours then she needs me in her office I can stay if I want to tho. I tell her I am going to explore the building. I walk to a room and hear a person say yea who is a good **** and a someone saying me I am mistress. I peak into the room and the "mistress" sees me and tells me to come into her lab or she will make me. I enter the lab and she makes me strip and put on a milking device onto my cock. I put the device on and she tells me that I need to do all the things she says for the next 20 mins or she will keep me as her **** I agree. She tells me to get on all fours so I do and she walks in front of me and pulls out her dick it is the cock of a horse. I beg for her cock and she goes and shoves it into my ass and fucks me it was around 50 inches long and 20 wide the biggest cock I have felt. I got fucked for around 10 mins and before cumming she pulled out and made me shove my dick into her cock hole I did and she came all over my dick the same time I came she told me that I can visit whenever and maybe I can be her test dummy sometimes. I leave the room and go down the hallway until I see an empty room it has a chair and a VR headset I enter the room. I hear the door lock behind me and a Futa tells me to sit down and put on the VR headset. I put on the headset and a video plays it is some type of hypnosis I watch it and cannot move for what feels like hours but turned out to be 10 mins. I got hypnotized to think that I am the Futa that made me use the headsets, Son. I feel the headset gets taken off and says hi mommy I missed you I give her a hug and she tells me her name is Melissa. I tell her that no she is mommy she tells me that she has had a bad day and wants me to make her feel better. I ask how and she pulls out a 5-inch dog dick that is 8 inches wide and the knot is 18 inches wide and tells me she wants to knot me. I tell her I would do anything for my mommy and she shoves her cock into me and fucks me for not even 1 minute and cums her knot grew in my ass. Her cock made me stuck to her she told me that I have the best mommy and I agreed she gave me her address and said to go visit mommy soon she will have a surprise. I agree and her knot comes loose and my asshole is so loose after her knot it hurts to walk. I stay with Melissa and she tells me how I am her favorite son and all the good things in her life. I see that 2 hours have almost passed and tell her I need to go she tells me to visit her at her house soon I tell her I will and that I love her.