SHOE EXPRESS customers. Throw your purchases away and wear the boxes instead. They'll be harder-wearing, more stylish and better fitting.
AMERICANS. Build your houses out of bricks and mortar instead of cheap wood to avoid having them destroyed by hurricanes every few weeks.
WOMEN. DON'T waste energy faking orgasms. Most men couldn't give a shit anyway and you could use the saved energy to hoover the house after you've been banged.