I called the Millikan Library a few minutes ago, told the guy who answered, "Al Fansome says it's Ditch Day". He yelled something about "stacks" and dropped the phone. The resulting noise sounded like a stampede.
(Were they returning the books to the stacks before they headed out, or does "stacks" mean something else in geek lingo?)
To top it off, before the phone went dead I distinctly heard a cannon being fired in the distance. An ROTC thing is my guess.
Anyhow, Happy Ditch Day!