Tanenbaum is giving a lecture tomorrow

So, Tanenbaum is giving a lecture at my university tomorrow. What would be a good way to troll him? I was thinking of wearing a shirt stating: "GNU Hurd - The power of microkernels." It's also money savvy because I could use that to troll RMS if he ever comes here. Some other guy suggested printing the flamewar off Google News and asking him for an autograph.

Note that it can't be something that would take too long to prepare (I only have until tomorrow) or something stupid he's sick and tired of hearing all the time (ie: "LAWL LINUX TARBALLS OWNED YOUR FACE BACK WHEN I WAS 5").

Also, Mr. Tanenbaum, if you're reading this, could you please ask "If you post on /prog/@world4ch, stand up." tomorrow? If you do so, you'll become the second /prog/ god, right after The Sussman.

O Tannenbaum, o Tannenbaum,
Wie treu sind deine Blätter!
Du grünst nicht nur zur Sommerzeit,
Nein auch im Winter, wenn es schneit.
O Tannenbaum, o Tannenbaum,
Wie treu sind deine Blätter!

O Tannenbaum, o Tannenbaum,
Du kannst mir sehr gefallen!
Wie oft hat schon zur Winterszeit
Ein Baum von dir mich hoch erfreut!
O Tannenbaum, o Tannenbaum,
Du kannst mir sehr gefallen!

O Tannenbaum, o Tannenbaum,
Dein Kleid will mich was lehren:
Die Hoffnung und Beständigkeit
Gibt Mut und Kraft zu jeder Zeit!
O Tannenbaum, o Tannenbaum,
Dein Kleid will mich was lehren!