A fabliau (plural fabliaux) is a comic, often anonymous tale written by jongleurs in northeast France between ca. 1150 and 1400. They are generally characterized by sexual and scatological obscenity, and by a set of contrary attitudes—contrary to the church and to the nobility. Several of them were reworked by Giovanni Boccaccio for the Decameron and by Geoffrey Chaucer for his Canterbury Tales. Some 150 French fabliaux are extant, the number depending on how narrowly fabliau is defined. According to R. Howard Bloch, fabliaux are the first expression of literary realism in Europe.
Some nineteenth-century scholars, most notably Gaston Paris, argue that fabliaux originally come from the Orient and were brought to the West by returning crusaders
The fabliau is defined as a short narrative in (usually octosyllabic) verse, between 300 and 400 lines long, its content often comic or satiric. In France, it flourished in the 12th and 13th centuries; in England, it was popular in the 14th century. Fabliau is often compared to the later short story; Douglas Bush, longtime professor at Harvard University, called it "a short story broader than it is long."
I've got a big bag of crabs here
I'm gonna put them in my mouth, oh yes!
I'm gonna run around the town on a market day
Everyone will look at me and say
I've got a mouthful of crabs!
*Vic Reeves jazzy hebedoo-hehboo-hai-badee singy bit*