Hi BlindedByTheDark: Unfortunately, I know what you mean. I have always felt as though I must give off some scent that tells others I'm vulnerable, go ahead & kick me. I suppose, in my case at least, it's not really true. But it sure feels that way sometimes.
I do recall my last therapist telling me I don't have the most masculine walk (I have Gender Identity Dysphoria). No one had ever mentioned this to me. And, after she mentioned it, I began to wonder if this was something that had contributed to the bullying I suffered throughout high school.
I don't know why so many people seem to take pleasure in just being mean. But it seems to be a popular pastime...