Claire finished the first stack of invoices and pulled the second stack to her, resuming her work. I picked up the first stack and pretended to look through them, all the while staring at Claire's naked breasts. She didn't say a word as she deliberately exposed her forbidden breasts to me. The lights from the office ceiling shone down the front of her dress and her breasts were in full light, not shadowed at all. I was most amazed by her nipples, pink and quite hard now. Someone came and told Claire she was wanted on the phone and so she started working faster. Her breasts jiggled a little more. Because Claire was leaning forward over her work her hanging breasts appeared fuller. Yes! I watched them with grateful, greedy lust and did not say a word for fear of breaking this beautiful, sexy moment. My cock was as hard as it could be, constrained by my tight underwear. I knew I was never going to forget this erotic gift.
Finally she finished the second stack of invoices, straightened up and handed them to me saying "There you are!" and she dashed out to answer her phone call. I thought her eyes might have been gleaming a bit, but that beautiful woman's eyes were always gleaming so I still didn't know for sure if she gave me that view of her naked breasts on purpose.
I did what I had to do with the invoices then I went to the men's room, opened my pants and sat on the toilet and grabbed my cock. It was still hard. I needed to get rid of this hard on and I knew only one way to do that so I stroked my cock with all my might until I came with a blast into a wad of tissue, my eyes shut and my memory focussed on the sight of Claire's jiggling breasts and hard, pink nipples. That was the only time I ever masturbated at work and boy did I ever need it.
Later that afternoon, when it was time to go home Claire and I just happened to step into the elevator at the same time and stood beside each other. Just as the elevator reached the bottom she leaned over and whispered into my ear "I think your pants are fitting you a little better now."