A slang pejorative derived from “first quartile.” The term is used to label a person as
intellectually deficient by implying that their
intelligence (IQ, competence, or performance) falls within the lowest 25% of a given
distribution.
More specifically, quart invokes statistical ranking rather than any measured assessment: to call someone a “quart” suggests they are in the bottom quartile relative to others and are therefore presumptively less capable, insightful, or rational.
Quart was first mentioned on November 8, 2025, by the micro-celebrity Buzzbulks.