The term functions as a dismissive retort, often employed sarcastically or ironically to indicate disbelief or disagreement with a statement, particularly one perceived as exaggerated or untrue. For example, when someone claims an unlikely or unbelievable achievement, the response “cap” suggests the claim is false.
Its significance lies in its ability to quickly and efficiently convey skepticism in digital communication. Its prevalence stems from its concise nature and widespread understanding, enabling users to express doubt without lengthy explanations. The term gained traction in online slang, particularly within internet subcultures and social media platforms.