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.
The act of sticking ones thumb in the ass of another as they bend over and yelling quart low. Little kids love to do this to parents in stores to embarress them.
Lil Johnny while in Wal-Mart catches his mother bent over and jabs his thumb in her ass yelling quart low as he does.