I was just travelling for a workshop and stayed in a hotel. The workshop organizers had a cute young blond assistant with amazing big titties. She was wearing this tight knit dress that clung to every curve, so her big tits were very much on display. I tried not to stare at them, but I'm sure she caught me glancing down at them more than once. Needless to say, she caused quite a stir in my pants and I knew that when I got back to the hotel I would need to masturbate while thinking about her.

After the workshop, I had plenty of time, so when I got back to my room I popped a Cialis and jumped in the shower. I decided to increase the excitement of my hotel masturbation by completely shaving my cock and balls. I then got out of the shower, slipped into a favorite pair of women's silky panties that I had packed in my suitcase, and teased my hard cock through the panties while thinking of the girl with the big titties. I was so hard and my panties were so soft that I couldn't hold out very long and soon I was filling my panties with hot cum. It was already dark outside when I was masturbating and I did not shut the curtains, and it excited me to think that someone looking out from another building might have seen me committing my masturbatory act.

tldr: I jacked off my shaved cock at a hotel while wearing panties and fantasizing about a girl with huge tits that I had met that day, until I filled my panties with a huge load of cum.