Why is being naked embarassing?

In 400 strokes?: This can be a lengthy discussion, but for starters: most religions - certainly the abrahamic - have cores such as original sin ; shame at nakedness. Secular possibilities include greater vulnerability to physical injury and concern about imperfections being seen. Civilization is a major factor - primitive people only began with practical reasons for cover but they learned shame quickly. Best!

Modesty : A complex topic involving individual, cultural, religious, and legal components. Please see the article on modesty below at en.Wikipedia.Org/wiki/modesty best wishes.