Spitting is not permitted!
Cooking asphalt! Demolishing houses!
Beating carpets! Driving a car!
Dragging a train! Chimney cleaning!
Street sweeping! Barrel carting!
Dust! Fumes! Pestilence! Bacteria!
Rust! Microbes! Smoking at the break!
Loading coal! Carting away manure!
But — spitting is not permitted!
(Fliegende Blätter, Munich, 1908)
Sic Transit Pestilentia 