If someone accidentally says something that reveals their subconscious feelings, especially their sexual feelings, this is referred to as a Freudian slip. A verbal mistake that is thought to reveal an unconscious belief, thought, or emotion. something you say that is different from what you intended to say, and shows your true thoughts
a slip-up that (according to Sigmund Freud) results from the operation of unconscious wishes or conflicts and can reveal unconscious processes in normal healthy individuals