If you enter a public pool in France, you will soon realize: Different bathing rules apply here than elsewhere. Long, loose swim shorts — which are completely normal in other countries — are strictly forbidden there. Instead, only one thing is allowed for men: tight-fitting swimming trunks, often known as “Speedo”. What at first glance seems like a bizarre style requirement has surprisingly profound reasons — and France is by no means the only country to regulate its swimwear. Why only tight swimming trunks are allowed in France The law prohibiting men from wearing wide swim shorts in public swimming pools, campsites, hotel pools or water parks dates back to…