Excess breast tissue in men, known as gynecomastia, can be painful and for most patients an aesthetically unacceptable condition. The growth can be either glandular (true gynecomasty) or due to hypertrophy of the fat tissue behind the nipple (pseudogynecomasty). If you touch your nipple area, you are most likely to find an indurated area behind it, a couple of centimetres in diameter. At any rate, most men ask for surgical correction as, beside the possible oversensitivity / pain to the nipple, the resemblance in appearance of feminine breast causes considerable emotional distress. The goal of surgery is an immediate reduction of symptoms and restoring of masculine and symmetric chest contour.
Apart from the pain having gone, I enjoy wearing slim t-shirts.