#16: No Sunglasses at Night
We all have differing opinions about people who wear sunglasses at night. Most people would agree that sunglasses at night are a major faux pas unless you’re Corey Hart. The artist who created this sign took matters into their own hands and made a sign calling out all the fans of night sunglasses.

This sign specifies “no sunglasses at night” and “don’t act cool” as major rules for the beach. Thankfully, sunglasses during the day are not a problem. This sign was actually part of an art installation at Siloso Beach in Singapore, so it’s not a real rule. But imagine how funny it would be if it were an official beach rule.