Yeah, the wording of that archaic Golden Rule is screwed up. There is a lot of meaning tied up in it that goes beyond the literal. Societal expectations for how to behave. Play nice, and stuff like that.
You start with the literal interpretation, which boils down to "Treat others the way you would want to be treated if you were in their shoes, instead of not thinking about the effect your actions have." From there you build upon it, adding exceptions and fine-tuning for specific actions and specific people.
The Golden Rule is one of my favorites, as I've interpreted it in the quotation marks above. For me, it's really about putting yourself in other people's shoes, and thinking about the consequences of one's actions.