Singapore is a place of rules -- a land of do's and don'ts (but mostly don'ts). These are a few of the signs I encountered on a previous trip to Singapore.
The strange one above informs you that durian fruit is not permitted on the subway. Durians have a very strong -- and to some offensive -- odor.
This particular sign struck me as especially harsh, even by Singapore standards:
Nevertheless, on your visit to Singapore, you still might catch a glimpse of a skateboarder bolting down an alleyway. After all the signs, such a sight will remind you that there's always hope for the human spirit.