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My graduate school advisor did the same thing constantly...to men and women both. In his case I think he was just clueless (he hated dealing with conflict and was worried about sexual harassment issues), although it's hard to imagine a man made it to his 40's without realizing that he was making people very uncomfortable. In my case, I endured it or ducked it for a couple of years before just asking him to stop, and he never did it again.
King George on the other hand seems to be completely aware of the signal he's sending.
I can't think of any woman who does this to a relatively strange man. It would come off as a sexual advance and dealing with mixed signals about sexual interest is really really awkward.