What is "bosinada"

The bosinada ( IPA: [buzi'nada]) or bosinata (pl. bosinade, bosinad, or bosinate) was a traditional, popular poetic genre in Milanese dialect that began in the 18th century or earlier and reached its apex in the late 19th century. "Bosinate" were usually written or printed on sheets of paper and recited by a sort of cantastorie or minstrel called a bosin ([bu'zĩ:], pl. bositt); they were usually satirical in content, sometimes explicitly designed to hold someone up to ridicule, or to debunk certain social habits or circumstances; in any case, they were the expression of the naive but sound good sense of the common people.