Humor is used extensively throughout the novel. The image of a tattoo of Castro on the head of Cabal's penis is not only funny, it is also symbolic of its owner's distaste for the communist government and its affect on the poor Cubans. The many mistakes Jesus Bernal makes in trying to bomb various sites for the First Weekend of July Movement are not witnessed as acts of terrible violence, but instead are seen as humorous pauses in the action. When he mistakenly drops six metric tons of anti-Castro leaflets on Kingston, Jamaica instead of on Cuba, the total ineptness is more than laughable. The leaflets were propaganda pieces claiming Castro had a venereal disease transmitted only by poultry.