Punctual? Rigorous? Romantic? What does it mean to be typically German? Rolf Sachs, a half-German, half-French artist and designer with a wry eye and a scarf made from dusters, explores the clichés that form his notion of a nation in a new exhibition at MAKK, Köln's Museum of Applied Arts. Culture editor Robert Bound went along to sort the ‘schadenfreude' from the 'sehnsucht'.