We fasted for Yom Kippur, read from the megillah for Purim, and said bruchas over every meal.
Thus he never had to read the megillah nor drink to celebrate an act of bloody revenge.
"long, tedious, complicated story," 1957, from Yiddish (e.g. a gantse Megillah "a whole megillah"), literally "roll, scroll," collective name of the five Old Testament books appointed to be read on certain feast days, from Hebrew meghillah, from galal "he rolled, unfolded." The slang use is in reference to the length of the text.