Men's Underwear

Underwear is sometimes partly exposed for fashion reasons or to titillate. A woman may, for instance, allow the top of her brassiere to be visible from under her collar, or wear a see-through blouse over it. Some men wear T-shirts underneath partly- or fully-unbuttoned shirts.
A common style among young men is to allow their trousers to sag below their waists, thus revealing the waistband or a greater portion of their boxer shorts. A woman wearing low-rise trousers which expose the upper rear portion of her thong underwear is said to display a "whale tail".