I am a 20-year old middle class boy living in the suburbs of a metropolitan city and by sheer luck I got myself a rich and a beautiful hot girlfriend aged 20 living in a rich area of the main city. She had one more vacation home near countryside. I have met her mother a few times before this incident took place and I must say my girlfriend has got those die-for hotness from her mom itself. Her family is a very open minded family and her parents knew about our relationship. So we thought of spending the long weekend at her vacation home. 

We arrived at the bungalow at around 4 in the evening. Both, her mother and my girlfriend went to their respective rooms to change. I was feeling somewhat horny and decided to check with my Girlfriend. I went into the room and saw her bent over in casual short shorts exposing the lower part of her ass cheeks. She was looking like a porn star. I slowly came from behind and grabbed her mouth with one hand and her pussy area with another and making sure that she could feel my dick on her ass. I gave a nice love bite on her neck and slowly put my hands in her shorts. I could feel her wet pussy with my fingers. My hard-on got huge. I started rubbing my dick on her huge ass and pinched her nipples from one hand. In a short time of 2 minutes, I whispered in her ear that I was about to cum, when I got a very hard kick on my balls and it supposedly hit her pussy too. I collapsed on the ground and she also laid in front of me with her ass near my mouth. When I turned, I got the shock of my life seeing my girlfriend wearing a short dress and heels and her face red with anger. I soon realized that it was her mom whose pussy I had been fingering from the last 5-7 minutes. The more shocking part was her mom never resisted. 

My girlfriend gave me another kick on my ass and asked in a loud tone, “What the fuck is going on?” Her mom replied, “Calm down sweetie, He mistook me as you and was just having some fun. Even I was enjoying and let me tell you, he is great at seducing”. Then her mom kissed passionately on her lips. I was in utter shock and pain while seeing this. I crawled to the feet of the two hot ladies standing in front of me and begged for pardon while touching their feet. My girlfriend getting calm said, “No, this is not done, I will let you two do whatever you want one condition. And that condition is he will do whatever I say and by whatever I mean whatever the fuck I say till midnight today. If he is able to do everything then maybe we all three could have a threesome. If not he will be in chastity for the rest of his time I am his girlfriend”. I agreed instantly and at this moment started one of the sexiest and kinkiest bdsm. 

Her mom asked me to strip naked. I followed immediately. Seeing my hard-on my girlfriend said let’s fix that ugly little penis first. My girlfriend was in her bikini suit and she ordered me to sleep on the bed. She then sat on her face. I was getting a massive hard-on. She asked her mother to bring that thing and in a short while I was able to sense ice cubes near my cock along with some slapping on my balls. I was in immense pain. In a short while my hard-on was gone and my penis shrunk to the normal 3.5-4 inch size. I felt some metallic thingy around my cock and heard a click sound while I could see the ceiling. I got another shock on looking down as I saw my cock in a cage while two hot ladies are standing in front of me. My girlfriend and her mom both were in bikinis now. My cock was desperately trying to get hard while my girlfriend came and teased me by positioning her cleavage on my caged dick and stimulating my nipples by her hand. Her mom cam near my face and slowly positioned her pussy on my nose. I was aroused to the next level but my cock was in the worst of condition. I shouted my girlfriend’s name by saying that this was not supposed to be now. To which she replied that upto midnight, I am your mistress. I own every part of you so call me mam and I can do anything with you as well as your small dick, you dickhead. Hearing this I got a tight slap on my dick. I understood my fucked up position. After 15 minutes, her mom went out of the room and she ordered me to get on my knees and worship her pussy. I was licking her inner thighs while smelling her blue colored panty. She ordered me to take it off and wear them. Extremely ashamed, I did accordingly. My back was facing the door. I suddenly got grabbed by my thighs and felt a long plastic thing near my ass. I realized that it was the strap-on worn by her mother. Her mother was looking like a pro-dominatrix in that black colored femdom costume. With stockings and hand gloves. In the next minute I was on the bed my ass high up in the air. My girlfriend sat on my neck and they both were slapping my ass. I heard my girlfriend calling me by cuss words. After a few minutes I could feel my girlfriend’s finger up my ass. She spat on my butt crack and stared inserting her fingers in my ass. I was in immense pain due to the fingers and the chastity. Hardly, I knew it was the beginning. Realizing that my ass was stretched enough, she lubed the strap-on with her saliva and her mom inserted it in my ass. I was in a mixed state of fullness, pain and sexual satisfaction. 

After about half an hour, I was released from the anal penetration. And my girlfriend flipped me over and put her vagina exactly on my mouth and ordered me to drink her urine. I did exactly as told. Thus, I received my first golden shower. I was feeling extremely degraded. Her piss was sour and light yellow in color. It was extremely sexy and I was again getting my hard-on. Meanwhile, her mom put her pussy on my caged dick and started humping as well as started pinching my nipples and arousing me. I was getting highly aroused and I fainted. I woke up at around 11pm as I could smell urine near my face. I realized my girlfriend’s and her mom’s pussy was on my mouth and they both were having lesbian sex. They both were pounding their pussies on one another. My nose and mouth were in between them. I soon got to drink their vaginal juices and afterwards I gave them both many orgasms with my tongue, all this while my cock was caged. Then, they started slapping my ass and again I was penetrated. I was on my stomach in the bed and my girlfriend was on top of me pegging me like anything. At around 11.50, my girlfriend made me lie on my back heads on the bed and my stomach and lower body in the air near the wall. Her mom placed her pussy near my mouth, I started licking and then my girlfriend started fucking my ass in the air. To my surprise, my girlfriend bent over my body and removed the chastity case from my dick. I was in the skies. I was extremely happy as the continuous pain from being aroused but being deprived of my erection was gone in an instant and there I was with my full hardened cock. My girlfriend was pegging me as well as stoking my cock ad her mom was enjoying her pussy getting licked by my tongue while stimulating my and her on nipples. When I was about to cum, my girlfriend aimed my cock near her mother’s pussy and my mouth and I came in loads. I spurted over my mouth, chest which were called boobs by those two hot and sexy ladies and my semen also went into her mother’s pussy. As soon as I came, my girlfriend removed the strap-on from my ass and started licking my boobs and face while I was desperately licking my semen from her mom’s pussy and thighs. Thus my bdsm session ended and I had a very nice threesome with the sexy mother-daughter duo which would be a story for the next time.