Last week, I woke up about 1:30 in the morning. I got up to take a piss, and walking past my parents bedroom on the way to the bathroom, I heard some unexpected noises. My dad has been away for three weeks, he's been out of town, and on lockdown in New York, unable to come home yet. I heard my mom moaning, like she was getting laid, so at first I thought she was masturbating. I put my ear up to the door to listen, and was shocked to hear my older brothers voice. He was moaning "oh mom! oh mom! Your pussy feels so good mom, I'm going to cum in you!" He let out a loud moan, then I heard mom say "oh yes, baby, give your mommy your cum".
I quitely ran back to my room, because I figured they might be heading to the bathroom to clean up afterwards. I waited about an hour, then headed back to the bathroom to piss. As I passed mom's bedroom, I noticed that her door was now slightly open, I tried to look in, but it was too dark to see if my brother was still in there.
I have been watching for the past week, and every night, about an hour after we all go to bed, my brother sneaks into mom's bedroom and I sneak out into the hallway and listen to them. I must admit that it turns me on and I usually stroke out a quick nut while I listen. I would love to join in. I tried to open her door last night, but it was locked. I'm seriously thinking about jimmying her door so it won't lock, then busting in naked on them, but it might not go well if I do. For now, I will probably just listen and beat off.