For whatever reason this moron has no doubt filed an "incident report".
Unfortunately men do not have equal rights to women on sexual issues. Personally, I would have at the time gone to the management of the facility and cleared the issue up at that time before any possible report existed.
If one is unusually well hung, this kind of sexual harrassment goes with the territory. I know several other men who have had this kind of experience.
I was at a Costco store in Southern California a few years ago and complained when a 30-year-old ver well endowed and copiously lactating female went into the patio section, sat down in public view and whipped out an entire breast with no cover to nurse a child. She can sit there and in a state of oblivion nurse a child and I have to be damn careful even how I urinate at a urinal to not show anything to avoid being accused of some damn impropriety. When this incident happened the lactating female at no point made any effort to cover up what was going on. She also exposed everything to accomplish this task. There were children present in that store when this happened and I was totally "shut-down" by a female assistant manager. The police department in that City also made a statement that it was "perfectly OK" for this female to expose in essence both breasts in a public place if she was nursing. I find this descriminatory and an obscenity to all of us men.......
As of right now, you have zero recourse and the only thing you will accomplish is diminishing your own situation while doing no good if you complain. Exposing yourself to others is not an answer under any circumstances because in the mind of some pinhead with a 3 inch erection, seeing your flaccid size will confirm what was done because he will never see something that size as flaccid. In his mind (if it is even a he) you are going to have to be at least partially erect to be that size. His own subconscious visual cruising over the years will reinforce that because he has seen very few if any people your size.
This just gets into a quagmire simply because of your luck of the draw on genetics with regards to size.
Size has both positives and negatives and right now you are experiencing one of the negatives.
In the future if something like this takes place you go to managmenet immediately and dispute the claim right then and there.