5. Chewing gum
Remember that chewing gum is completely banned in Singapore. Are you surprised? The whole world thinks so, but in Singapore, it is normal because they prefer to keep the city clean and they think the best way to keep the city clean is to ban chewing gum. If you’re going to Singapore, don’t chew gum or you could face up to two years in jail and a $1,000 fine. Haha