7up

Why is 7up called "7up"?
My labmate told me that when the game is tied at 7 point, they call it 7up.
but when the game is tied at 8, they also call it 8up.

then why 7up is called "七喜" in chinese but 7up actually means "七起"?
maybe the reason is the same as calling me "文地" instead of "聞地" la...