Elliott M. sent out the following particularly silly email long ago; for some reason I had occasion to quote it twice this past weekend, and then I happened across an electronic copy of it, which seemed like a sign that I should post it. So, with Elliott's permission:
Date: Mon, 08 Sep 86 01:00:40 EDT Subject: TOP SECRET (Your Eyes Only) (SHHHHH! Don't tell anybody, but: ) 3.14159265358979323846264338 (We're gonna get you out of this joint. I brung you a file with a piece of pi in it.)
I only wish I had remembered this in time to post it for Pi Day.