The Paper Bag

In Japan, whenever you buy female sanitary products, the clerk puts the products in a brown paper bag. Today I purchased some necessary items and before I realized it, the clerk had placed my products in a paper bag and THEN in a plastic bag. Maybe the purpose is to avoid embarrassment, but because all sanitary products are placed in paper bags, everyone still knows what you bought whether or not it is in a paper bag! I think the paper bag makes it even more seem as if you are more embarrassed because it seems as if you are trying to hide the products!