Go, Diva! You are my hero.
Years ago I worked for a large catering company that had contracts to provide catering at several religious venues. I was assigned to one of these. Since the company paid a percentage on each event to the facility it was not unusual for the director to come to our office to go over the contracts.
The first time I felt the director's hand on my tush I chalked it up to the two of us passing each other in a narrow doorway. The second time I really got it that it had been deliberate. He didn't get a third time, but he tried. He came to the office requesting a contract. I got it from the file and brought it to the table. As I was standing next to him just about to open the file, out of the corner of my eye I saw his hand starting to come close. In a very quiet voice I said to him "If you touch me I will deck you."
He looked at me shocked. He asked "You really feel that strongly about it?" "I do" I said. "Well, that's just your neurosis" he said. "I'm entitled", I said. That's right folks, I'm neurotic because I didn't want this alter kocker's paws on me.
A couple of weeks later he hosted a lunch meeting for the Director's Association at our facility. Since we had minimal wait staff for these mid-week functions it wasn't unusual for me to grab a coffee pot and help out. I was pouring coffee at his part of the table. I was fully prepared to be so startled if he grabbed me that I would end up spilling hot coffee in his lap. I was sort of disappointed that he behaved himself.

These days that kind of behavior could get him slapped with a harassment suit pretty darn fast. Back then I just did what I had to do..