Layby shock

Out of the office just doing a rare delivery for work I pulled into a layby , I was about two hours away from finishing work and as the drive had gone more smoothly than I expected I didn't want to return to the office just yet.
In fact I was enjoying being out in the sun and listening to the radio and figured I'd just pull into a layby and wait there for an hour
And hopefully return to the office just in time for there to be nothing to do
The layby was deserted in the middle of nowhere I didn't want to risk someone I worked with catching me wasting time
As I said it was deserted and had lots of trees and was over grown and out of view from the main road which was quite anyway
While I sat there listening to the radio smoking a cheeky cigarette a car pulled up behind me
A man got out who stretched and then lit a cigarette himself, he ambled around a bit I thought he just wanted to stretch his legs
He walked passed my car a couple of times looking at me while he smoked and on probably the fourth time stood not quite in front of my car but so I had a clear view of him he looked over his shoulder a couple of times
He turned slightly towards me , and rubbed his crotch I made eye contact and smiled I figured he just had an itch and would be embarrassed
When he turn round a second time he had his hard cock in his hand !
This wasn't the first time in my life someone has showed me there cock and started masturbating
But the whole suprise of this moment I couldn't help but gasp a bit
I was shocked but in all honesty a bit turned on by it all
I could see how my shock had excited him but he was even more excited I didn't really react at all and just watched him almost hypnotized by him stroking it while staring at me
He moved closer to the car now standing directly facing me
My nipples became incredibly erect my heart was pounding I didn't even know I had done it but my hand moved up my body and squeezed one of my breasts to maybe relive some of the excitement or to feel pleasure I still don't know
He moved over to the driver's side window I was so nervous and a bit scared yet still excited
He carried on stroking away I'm sure he wanted me to open the door or window but there was no way I was going to
His cock was of average size but look so hard
He slapped it a couple of times against the window but I was frozen just staring at it
After awhile it was to much for him and he ejaculated all over my driver's side window
The cum splashed against it with force and just a huge load the sound of it hitting the window made me jump
He smeared the cum around a bit with hard cock rubbing all round the window
I just looked at him and smiled again
He zipped up got in his car and left
On returning home from work I think I must have mastubated five times that afternoon to what had happened
Kind of tame really but I was just wet from the whole experience
So if you read this and it's you thank you