How is it that I've gone a whole year in Germany and never managed to mention the German word for lightbulb?
Gluehbirne. The literal translation of this is "glow-pear".
I think they've outdone themselves on this one. Forget dust-sucker (vacuum), hand-shoe (glove), and zebra-stripes (crosswalk). Light-pear would have worked and been pretty damn cool. But they did even better. Glow-pear. German rules (when it's not sucking).