A "Slip of the Tongue" refers to an unintentional error in speech, where a person accidentally says something different from what they intended. This can happen due to various reasons, such as nervousness, distraction, or simply a momentary lapse in concentration. These slips can range from minor mispronunciations to more humorous or embarrassing mistakes. Such errors are often studied in the field of linguistics and can reveal insights about how the brain processes language. They may also be linked to Freudian slips, where the mistake inadvertently reveals a person's subconscious thoughts or feelings.