If you're nice in Nice, France, you'll get your coffee for less.

A coffee house posted on it's menu board different prices for how customers order their coffee. The translation of the phrases on the sign mean if you say "Coffee" it will cost 7 Euros. Politely say "Coffee, please," it will cost 4.25 Euros. Greet them with "Good Morning, coffee, please" that will only be 1.40 Euros.

I wouldn't mind seeing some punitive prices added in. Maybe 10 Euros if you are rude the barista, or 14 Euros if you track in mud.