I Discovered My Stepbrother and He Fucked Me in His Room Next to His Mom

One day, while exploring the house, I found my stepbrother’s room locked. Curiosity got the better of me, and I entered quietly. I saw him masturbating intensely, his cock hard and throbbing in his hand. It excited me to see him like that, so vulnerable. Without thinking twice, I took off my panties and sat on his lap, impaling myself on his erect member. He was surprised at first, but quickly began to move his hips, fucking me hard and deep. The moans mingled with the sound of the television coming from the next room, where his mother was asleep