Volunteering my backside to a unfamiliar person at the bus station

I was volunteering at the bus station when a guy came up to me and asked if I wanted to have sex with him. I was taken aback at first, but then I got excited. He was a big guy, much bigger than anyone I had ever been with before. He had a huge cock that was ready to go. I could feel it throbbing against my butt as he pushed it against me. He was talking dirty to me, telling me how much he wanted to fuck me. I could feel his breath on my ear as he whispered in my ear. He lifted my skirt up and started to rub his cock against my ass. I could feel his big cock inside of me, pumping hard. He was fucking me hard and fast, making me scream with pleasure. He came inside of me, filling me with his hot cum. It was an amazing experience, one that I will never forget.