In fact, it is derived from ancient Japanese romantic practices. Young unmarried women were not to be too friendly with young men, and home visits at night were right out! So the young man would wear a handkerchief in the aforementioned manner. That way, if the lady liked the gentleman, she could honestly say that she did not see his face clearly (and if she did not like him, he could be identified easily). Over time, the classically-tied handkerchief became comic shorthand for "Incompetent Sneaky Person". Examples of Stealth Clothes include: