Imagine Them Naked

I think at some point in our lives we've all heard that public speaking is the number one fear amongst people. And at another point, I'm sure we've heard the old line "imagine everyone in their underwear."

What I'm curious about is, where did this come from? I'm sure sayings like this don't just come up randomly in several different situations and catch on and spread... there is usually one originator. Like the saying, "for Pete's sake," probably started with a certain Pete in mind.

So, which perverted public speaker came up with this advice?

How much effort?

Props to Mr. Persaud from Long Beach BMW who took the effort to write out an automated dealer response e-mail ENTIRELY in initial caps. Unless he was using notepad to write this, his grammar/spell check must have been SCREAMING at him to use proper capitalization.