AKA "The Ketchup Song." This isn't the original video, but it is a bit tamer. This 2002 release reached #1 on 26 different charts worldwide although, ironically, it peaked at a mere #54 on the American Billboard Hot 100 and #39 on the Billboard Top 40. Weird. The song tells the story of a pimp-like "afro-gipsy, rastafari" character named Diego who walks into a crowded nightclub at midnight. The DJ, as he sees Diego walk in, plays the "twelve-o'clock anthem," "the song he desires most," which happens to be the 1979 rap hit "Rapper's Delight" by Sugarhill Gang.
As for why Las Ketchup calls themselves that, they are the daughters (Lucia, Lola and Pilar) of Juan Muñoz, a Spanish flamenco guitarist known as El Tomate (The Tomato).