I left the camera turned on in my parents’ room to watch them have sex

I am 17 years old and since I was really young, every Friday night my mom and dad have sex. At first, they thought I didn’t know, but it’s impossible not to hear my mom’s pain cries. So, to see what they were actually doing, I put a hidden camera in their room. I want to learn how to have sex and maybe seeing them do it can teach me something. As soon as the video starts, they’re greeting each other after my dad’s long day at work. My dad starts touching my mom’s fat body, and suddenly my mom is naked with her legs wide open. In that moment, my dad starts licking her pussy and penetrates her deeply and quickly. I can tell they really know what they’re doing, and it turns me on knowing my parents do this, just two rooms away from me.