Singapore has one of the most uncommon public decency laws. Breaking these laws can have quite severe consequences from fines, jail terms, and floggings.
Singapore is famous for its unmatched cleanliness and strict environment conservation policies.
It's illegal to chew or import gum to Singapore. The only gum allowed in Singapore is dental gum or nicotine chewing gum. You can only find this gum at a doctor's office or a registered pharmacist.
The punishment for chewing gum can be a fine as high as $10,000 it serving a maximum of 2 years in prison.
Littering, smoking in certain public areas and spitting are also illegal. Littering is punished by either community service or a fine of up to $1000.
Drugs attract severe punishments in South East Asia countries. In Singapore both drug possession and consumption are illegal. Police can carry out random drug tests. It's important to note that it doesn't matter whether you consume drugs while within or outside Singapore, a positive drug test will land you in prison. Make sure you're cleared of any drugs before arriving in Singapore.
Don't use somebody else's wifi
Connecting to other people's Wi-Fi (whether it's passworded or not) without their consent is considered hacking and attracts a jail term of up to 3 years or a fine of not more than $1000. The only safe free Wi-Fi you can use is Wi-Fi in public spaces.
Gay sex still remains illegal in Singapore even though the country has an active gay scene. It's safe for the LGBT community to visit Singapore, just keep a low profile.