When I was 15 I jacked off all the time. Just like most teenage boys do. One day after school, I arrived home to find that nobody was there. My mom left a note that she would be home in about an hour. Great! I now had some time to jack off without anyone around. I headed to my bedroom, where I stripped down, jumped onto the bed and spread out some porn magazines. I also loved to use a pair of my sisters panties to help in my fantasies while I stroked. My sister is four years older than I, and in college while living at home at this time. So, there I was totally enjoying myself and apparantly making quite a bit of noise. When my door swings open and there stands my sister and two of her sorority sisters.
They were all laughing and telling each other they knew that sound was me beating my meat. Shortly after that one of them realized I had a pair of my sister's black panties wrapped around my cock. My sister asked for her panties and they could tell that I had come in them several times before. I thought that I was going to be in big trouble, but my sister's friends began whispering and they turned to face me and tell me my punishment. I was to finish jacking off while they watched. Or mom and dad would find out. So, I agreed. They handed me the panties and told me to get hard again. It didn't take too long. Here I was jacking off in front of my sister and two other girls. As I got closer to coming, I was instructed to hold the panties in one hand with the inside crotch waiting for my sperm.
I didn't disappoint them, because I shot a heavy thick white load into them. The black panties were full of my cum. I thought I was going to die when they told me to lick my cum from the panties. I objected, but they said they would tell om me. So, I brought them to my face and then told to put the crotch in my mouth and suck all the cum off. I did as I was told. The three of them went running down the hall laughing about what they had just made me do. Later they came to check on me and apologize. They each left me with a pair of panties which they would inspect at the end of each week to see how much I had used them. Then they would give me a new pair for the next week. As far as I know, our secret was never revealed.