Something that is outstanding or exemplary (in magnitude, importance, etc.); anything that is definitive in character, or that is the epitome of its kind; frequently humorous. Compare the father and mother of a ——.
Origin
Late 19th century.
Definition of mother of all —— in US English:
mother of all ——
noun
Something that is outstanding or exemplary (in magnitude, importance, etc.); anything that is definitive in character, or that is the epitome of its kind; frequently humorous. Compare the father and mother of a ——.