About this time, too, it was laid down as a rule that when a pig and any other animal met on the path, the other animal must stand aside: and also that all pigs, of whatever degree, were to have the privilege of wearing green ribbons on their tails on Sundays.

George Orwell

Animal Farm. Chapter 9. The pigs continue to assert their power over the others and excuse themselves from the rules. The ribbon ban no longer applies to them.