It actually happened with a guy I just met in a club. I think I was 18 or close to it at least. One of my first nights out with some friends.
An older guy started flirting with me there, he was really nice, giving me drinks and being gentle/careful. He started getting close to me, we kissed and he suggested to go out for a walk, take some fresh air. I was quite falling for him so I accepted.
I had no idea what he had in mind but once we got outside and we walked a bit he invited me in his car for some privacy. I thought he just wanted to play, rub my pussy, fell me something like that.
Once we got in the car he basically changed, didn't say much just unzipped his pants and got his cock out. He told me to suck it.
I was stunned, just blocked there, he touched my pussy and told me that I'm a cutie, I need to be a good slut so I should suck on it, I will like it.