Well then , the next time one eyeballs your sister, you knock him one. Seriously...what else can one do?

Tell you what, I was in a shopping mall with my husband. One of them eyeballed me and followed us around. My husband turned around and told him very clearly what was going to happen if he don't disappear very quickly.

Of course, that does not make the situation in general go away. But one can only do so much in a place like this.