A spontaneous encounter with my stepbrother resulting in an internal ejaculation

After a long day at work, I decided to chill with my best friend's little brother. We were just hanging out, talking about nothing in particular, when things started to heat up. His big cock was already hard and ready for action. I couldn't resist the temptation and decided to give him a little taste. He took his time, slowly undressing me until I was completely naked. Then, he let me take the lead, riding him like a cowgirl. It was a wild ride, and he didn't hold back. He came inside me, filling me up with his hot cum. It was a spontaneous and unexpected encounter, but one that I won't soon forget.