Do not know if it relates to the topic but swimming pool and beaches do not follow a consistent set of rules in the world. This unexplained human psyche might be one of the reasons, the naked man started wearing clothes thousands of years of ago .
In the mid 1980's a new swim suite called the thongs or G-sting bikini was introduced. Beach goers and onlookers had been enjoying this abbreviated clothing in the City of Sarasota, Florida for quite sometimes, when a big fat women started to show off her super size in her Suleimani thongs on the beach. People expressed their disgust and complained. The mayor of Sarasota Beach immediately introduced a bill in the city council to ban G-String. Now that is called discrimination.