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The other day my friend and I were playing darts with several other players. We selected teams. When I learned that my partner would be Jordan, I enthusiastically announced,
"Hey Jordan, it's you and me!"
My friend objected that I should have said "Hey Jordan, it's you and I," for the same reason that one announces at the door of a friend who wonders who is outside, "It is I."
I find "It is I" rather pompous, but it seems correct. "Hey Jordan, it's you and I," on the other hand, seems incorrect. What is the rule here?