I don't know if this qualifies as beginner's stuff, but I've been doing this for a while now, and can't really seem to get a definitive answer on this.

When I'm walking, as soon as I make eye contact with a girl they always tend to look down. I know with males it's more of a unintended intimidation thing, but with the girls what is that? Everyone else is saying it's one or the other. What say you, Seddit?