Orgasm in the stairwell, masturbating on the stairs

I wore a sexy fishnet shirt under my coat for a job interview at a modelling agency. Without panties, of course. Together with the boots, it was a great sight. The agency manager then said we could do a test shoot in the stairwell. I showed him straight away that I'm a really horny slut. I fingered my shaved pussy to orgasm right in front of him.