"Mental Revenge" is a song performed by Waylon Jennings. The lyrics revolve around a bitter and vengeful narrator who has been hurt by someone they loved. The song expresses the desire for revenge, but not through physical means. Instead, the narrator seeks "mental revenge" by hoping that negative events and circumstances befall the person who caused them pain. The narrator wishes ill upon the person's chosen friend, hoping they face struggles such as getting drunk and losing their job. They also express a desire for the person to face hardships and difficulties in their life journey, hoping every road they travel on is dusty, rocky, and hard. The lyrics imply that the narrator had strong feelings for this person but felt unloved in return. They feel betrayed, as the person only made them feel sad and lonely. The narrator's bitterness leads them to wish for the worst in the person's life, hoping that if a curtain of misfortune were to fall, it would fall on them. The song's aggressive and vengeful tone is communicated through the repeated refrain of having "sweet, sweet, sweet mental revenge." Overall, the lyrics depict the narrator's desire to see the person suffer emotionally and mentally, as a way to get back at them for the pain they caused.