Caught a guy jerking off in his car

After doing some shopping I was going back to my car through an underground parking lot. I was about to get into my car when I noticed some movement in the car parked next to me.

I instinctively glanced over and saw a man in the front seat holding onto his t-shirt and stretching it over his crotch. A second later he lifted up the shirt, uncovering his throbbing cock. It was quite obvious he did that on purpose.

It was very unexpected to say the least, but it was not my first time encountering a dick flasher. I’m also not a shy girl, so things like this do not fluster me. I stopped and unapologetically stared at his cock, contemplating what I should do - ignore him and go about my day or have some fun.

I could not help myself and the little devil in me chose the latter. He also had a very nice cock so that helped make the decision. 

Now fully exposed he glanced back at me with the corner of his eye and started jerking off, already leaking a lot of precum. I could not help but notice how hard he was, with a big, pulsating vein going along the full length of his shaft.

He had an excited, but at the same time terrified look on his face. I could tell he wanted to fully acknowledge me, but was too scared to do it. I was just standing there with a big smirk on my face and enjoying the show. 

After admiring the view I decided to take this encounter to the next level - I quietly knocked on the window, startling him. He directly looked at me and I made a hand gesture for him to wind down the window.

The look on his face was priceless, switching between emotions  of "Omg, I've won the lottery" and "Oh no, I'm in so much trouble".

He timidly opened the window. I leaned over and rested  my elbows on the door, getting a closer look at his veiny, pulsating cock. 

“Wow” - I seductively whispered, letting him know I liked what I saw. He started breathing heavily, and stroking even faster. I looked at it for a few more seconds before lifting up my head and looking him straight in the eye. 

With a big smirk on my face I said: "Let me help you with that", and pressed my tongue into my cheek, suggesting a blowjob.

As soon as I did that I noticed something white landing on his chest. I looked down and he was already shooting ropes. He let go of his dick, quickly started the car and drove off in panic while still cumming.

I had not laughed so hard in a long time, I just kept picturing him arriving home and running out of his car with a cum covered t-shirt.  

I was also slightly disappointed though. I was expecting to end up with a story of blowing a complete stranger and ticking that off my sex life bucket list, but in the end I just made him cum prematurely without even touching him. I suppose that’s also an achievement.