This experience happened just out of the blue recently and turned me on enough to share it with other readers.
My husband and I were sitting opposite each other watching TV and in the commercial break I told him I was just going for a pee. I got to the toilet and closed the door. I had just pulled down my panties and was squatting on the toilet when the door slowly pushed open. It was my husband who said he had been looking up my skirt as we sat watching TV. He said that he had been able to see right up to my panties and had got quite turned on. 'I want to watch you pee,' he said.
I was quite flattered, being happy for him to stand and watch. He was now undoing his pants and took out his penis, which was already showing signs of arousal. I was starting to trickle, so I moved back a little to let him see my pee flowing. As I peed he stood in front of me masturbating, getting more and more excited. He moved closer to me as I was starting to finish peeing, but he told me to stay there while he finished himself off.
In a desperate voice he told me he was ready to come, as he moved even closer and pushed his cock up against my face. He positioned the tip of his cock in my mouth just as he started cumming. I kept my mouth closed, but I felt the sudden spurt of warm semen on my lips and up onto the side of my face. His ejaculation onto my face was a new experience for both of us and because it all happened without any planning it seemed especially rude. I got a little bit of semen in my mouth, which tasted ok, but I don't think I would want to swallow loads.
We cleaned up with toilet paper and made it back to the television just as the programme was restarting. An eventful couple of minutes.