Final answer:
The query refers to a significant song that topped the US 100 charts, sparking a dance craze with signature arm and hip movements, reminiscent of famous dance crazes like the Twist or the Macarena.
Step-by-step explanation:
The mention of a song hitting the US 100 song charts for an extended period and creating a dance craze among the youth with distinctive arm movements and hip swiveling evokes the cultural phenomena that have arisen throughout history where music and dance capture the public's imagination. While the specific song isn't mentioned, this description aligns with many dance crazes that have been popularized in the United States, such as the Twist in the 1960s or the Macarena in the 1990s. These dance crazes often transcend their initial niche audiences and become widespread movements, marked by their popularity on music charts and their adoption by broader demographics, from the young to the old.