A good view from the carpark

I was outside the university in my car in the carpark. There was a group of female students on the other side of a small grassed area. It was a really windy day. One of the girls was wearing a sort of knee length summer dress and it caught the wind and it blew up giving me a perfect view of her round little ass in a pair of white panties. I was really turned on by it, so I undid my jeans and pulled out my stiff little cock and started stroking. There was a lecturer guy in his 40ies just walking out of the building and he stopped to talk to the girls for a couple of minutes. As he walked away I saw him look back a couple of times. I know what he was looking at. By the time he got to his car he had a massive bulge in his trousers. It was really noticeable. I was parked beside his car. He saw me and walked over towards me. I said to him “you’re getting quite excited there; I can see you’ve been enjoying the view.” He laughed a bit and said “yes she’s got a perfect little ass.” He looking in my window and saw me with my cock in my hand. He said “looks like I’m not the only one excited” He asked if he could join me and he came around and sat in the front seat beside me. He immediately undid his trousers, and pulled his trousers and jocks down to his ankles. And his big hard cock popped out. It was about 7 inches and had a big round knob on the end. We both sat there masturbating and looking at the girl who was still standing there. We both talked about how perfect her ass was. He then asked if he could stroke my cock. I said only if I could stroke his. We both started stroking each other. It felt good the way his hand moved over the head of my cock. And we both started moaning and groaning. Then I started groaning a little louder and told him I was about to cum. And then I shot a big load of cum out and up on the windscreen. He then started groaning louder and he shot out a big load as well up on the windscreen. We must have caught the attention of the girls who started walking over towards the car. We quickly got dressed and he got out just and they arrived. They noticed the 2 big cum stains of the windscreen and started whispering and laughing. And said “did you two have a good time”