Next, I should look at Manu Chao's background. He's a Franco-Spanish musician known for combining various musical styles, often with political and social themes. The song might be a critique of machismo or patriarchal norms. The speaker's reaction to the horse "fucking his wife" could be a humorous take on male insecurity or a deeper commentary on male-female dynamics. The horse as a symbol could also relate to traditional values versus modern relationships.