As a 22 year old bi guy, it was my first time with a trans girl as a bottom, who was a prostitute. We met on a gay hookup app and I immediately wanted her to fuck me. So I washed up and got in the car. She was staying in a guesthouse. It was just a tiny room, but I immediately knelt down in front of her and took her cock in my mouth, it was about 7.5 inches. She started fucking my throat, it felt divine as her cock slid down my throat. After that, she licked me and put lube on her cock and my asshole and pushed it all the way in. That feeling is indescribable, a mixture of pain and pleasure. She kept touching my prostate, it took about 10 minutes and I came without hands, but she fucked me hard for another hour, relentlessly. After my first orgasm, I came every 5-10 minutes. It was the best gay sex experience of my life. I'll be seeing him again on Friday.