Parody — not to be confused with satire — is the imitation of either formal or thematic elements of one work in another for humorous purposes. The most high-profile parodist in modern America is Weird Al Yankovic, who takes others' songs and rewrites the words. Many parodies follow their originals closely, ???. Not all parody needs to be bitter; some parodies are merely gentle and even affectionate ribbing.

From the Guide to Literary Terms by Jack Lynch.
Please send comments to Jack Lynch.
Note: This guide is still in the early stages of development.
Three question marks mean I have to write more on the subject. Bear with me.