Ducktails are a popular hairstyle for men that was most prominent in the 1950s and '60s. It involves combing back the sides of the hair and letting the top sweep upward and backward like a duck's tail. While "ducktails" is the most commonly used term for this hairstyle, there are several other synonyms for it. Some people refer to it as a "duck's ass", "duck butt", "DA", or "cockscomb". All of these terms are an indication of the similarities between the hairstyle and the shape of a duck's tail when it's in the air. Regardless of what it's called, it's a classic haircut that has stood the test of time.