Allan C: Are you referring to the line that Mrrzy quoted? "Hooray, hooray, the first of May, outdoor f***ing starts today"? I don't know if it's in Chaucer, but you can check for yourself. I know Chaucer did say a lot of stuff about May.

The complete text of the Canterbury Tales is available at Project Gutenberg.

An incomplete but very user-friendly version with an interlinear translation is available from Harvard University.