People often ask me, what are Manboobs? For most people, they are familiar with the term man boobs, moobs, or some other slang term but when they hear the medical term for enlarged breasts, gynecomastia, they give me a funny look. Simply put, gynecomastia is the presence of enlarged breasts in males. This condition affects a surprisingly large number of boys and men and it exists in a number of different forms. According to some studies, somewhere between thirty and sixty percent of men have or have had some form of gynecomastia in the past or currently suffer from it.