This happened a few years ago when we were in highschool and I had invited my best friend to a sleepover as I had done many previous times.
My mom can be described as thicc, short, with large breasts with a golden heart. Being the pervert that I am I have raided her panties drawer numerous times..
Anyway, after we finished playing video games late at night we went to bed. My best friend and I shared my room - I slept on the bed while he slept on the floor on a mattress. Being so tired, I was able to fall asleep easily.
As I was sleeping, I was suddenly awoken by weird noises. It was like a soft but very rhythmic clapping. It reminded me of something but I didn't know what it was. When I opened my eyes I was absolutely shocked. My best friend who was laying right next to me had his boxers pulled down and he was jerking off his cock. Quite understandably, after so many years of our friendship I had seen his cock numerous times but it was always in the flaccid state. I always thought it looked above average when it was soft but now I saw it fully erect and it was huge. My dick is not exactly small - it's like 5.2. His was like 8 inches and very thick with an oversized head. I saw the tight foreskin being continuously pulled over it.
I didn't mind he was jerking at all. After all, I do it all the time as well so I decided not to disturb him. But then I noticed something weird. It was dark inside and the room was lit only by the moonlight coming through the window so I couldn't see it properly at first. But then I saw it and my heart skipped a beat. The fucker was holding my mom's panties in his right hand and he jerked off with them. I immediately recognized them because they were my favourite. He must have stolen them from the laundry room while mom was taking a shower and I was too busy playing the video game.
I was fucking shocked and my heart was beating so fast I was afraid he could hear it. I was furious and jealous too. I was about to call him out when I noticed that my dick was hard as steel. I literally felt as if I was about to cum without even touching myself. It was hot. I felt jealousy but I was turned on at the same time. I had some cuckolding and sph fantasies at that time but I wasn't even remotely ready to do anything in reality
I continued to watch him with my dick hard as he was firmly gripping his cock with my mom's panties. He changed the pace a few times. The fucker even repositioned the panties so that the place where her pussy usually rests was over the head of his cock. I noticed he also sniffed them several times while grabbing his cock with his other hand. He probably wasn't ready to cum yet though. I noticed him fumble for something and I realized it was his phone. I saw him click on the Instagram icon. After a few seconds I realized what it was because pictures of my mom materialized on his phone. He went through some of those while he was slowly jerking off with his other hand. I noticed that he quickened the pace when a more provocative picture appeared. The pics very usually very innocent but there was one picture though which immediately caught his attention. My mom was in a swimsuit posing with her group of female friends at the beach. She did look sexy in that pic.
I noticed it caught his attention because he started jerking more vigorously and the slapping sound got even more noticeable now. I wanted to beat the shit out of him but at the same time I was so turned on I wanted to see what would happen. It didn't last long. He jerked faster and faster while his gaze was fixated on the picture. Then, all of sudden, I saw it was about to happen. He acted quickly. He threw down his phone which was still displaying my mom, quickly repositioned her panties so that the little piece of cotton inside panties - the one where pussies rest - was directly on the head of his cock, and then started cumming. I knew the fucker was cumming because his pace got pretty fast and then suddenly slowed down to a few loud thrusts. In between the sounds I swear I could fucking hear him pump his seed inside them.When he was done, he wiped off his cock with the panties and rubbed the cloth together probably because he wanted to get rid of the most visible evidence. Then he got up - now with his cock flaccid - and went to the laundry room to throw her panties back to the laundry basket. He was probably confident she wouldnt find out because he knew she would use a new pair of panties next day - which she did. Anyway, when he was done, he pulled up his boxers and went to sleep.
As you might imagine, I couldn't sleep at all after that. I was so fucking horny. I was so horny that I waited for half an hour before I was sure he was asleep, then I got up, pulled the exact same panties out the laundry room and put them under my blanket where I already had my dick prepared. I unfolded the cum filled panties and put them over my dick. I could feel his cum there because it was thick and still kind of warm and it immediately lubricated my dick. I was about to cum the moment I felt it but I wanted to go even deeper down the rabbit's hole. I grabbed the panties and put them to my face. I sniffed them. They had a salty smell of fresh cum and were all sticky. I started to jerk off faster and then when was about to cum I actually started to lick his cum. I imagined I was licking it off my mom's pussy in which he would cum. Then I had one of the strongest orgasms ever. I wiped off my cum with her panties as well and buried it deep inside the laundry basket.
The next day my best friend left our home. Over time I actually got to cum inside those panties a few more times because they got washed. They are still my favourite though and I get instantly hard when I see them. The experience has also fueled my cuckold fantasies
