13 Rules Around the World That Sound Made Up But Are Real

The Chewing Gum Rule

Singapore’s chewing gum rule is one of the most famous “sounds made up” travel facts. Singapore Customs lists chewing gum as prohibited for import, except for approved oral dental and medicinal chewing gum. The rule is often misunderstood: it is not simply about someone chewing one piece in public; the bigger focus is import and sale restrictions. Still, the idea shocks many visitors because gum seems like such a small item. The reason comes down to cleanliness and public maintenance. When gum sticks to seats, floors, and doors, it becomes expensive and annoying. One tiny habit created one very famous rule.