Linux/Ubuntu geekiness with a Ghostbusters reference thrown in for good measure. Perfect for catching the attention of precisely your segment of the subcultures of nerd.
NOTE: This is the version suitable for light backgrounds. Black is an option, but the print may only be visible when light hits it – which could be exactly what you’re looking for (yay! More obscurity!).
TRIVIA NOTE: Even though the score soundtrack lists Zuul’s name as “Zool”, the original script and most later Ghostbusters media spells the name “Zuul”.