Where did hot to trot come from?

The phrase "hot to trot" is believed to have originated in the United States in the early 20th century, likely emerging in the context of horse racing. It describes a horse that is eager and ready to run fast, which later transitioned into slang for someone who is enthusiastic or eager for romantic or social pursuits. The phrase gained popularity in the 1980s, particularly in popular culture, and continues to be used informally today.