How do I view a Facebook page as someone else?

[Terence]

I know how to view my timeline as someone else, but I have several Facebook Pages I am admin of and it doesn't seem to have the same interface for viewing those as someone else. A quick web search turns up hundreds of pages on viewing personal timelines, but not pages. How do I go about doing that?
Peter, "Facebook sucks" isn't an answer. And "people are getting off of it" is demonstrably untrue. You may be right in that it isn't possible but I don't particularly trust your answer, given the rest of your comment.

As to Mad's answer, that shows me how to use Facebook as my page, which isn't what I'm asking. I know how to do that. I want to view my page as a different user like I can view my timeline as a different user.