Musical douchery 

when the composer or writer of a song puts in a part of a song that makes no sense as to why it would be there and so the only explanation is that it is there simply to screw with the musicians and/or audience

Musician #1 "Why do we go back to minor for three bars? It's completely pointless"
Musician #2 "No idea, must just be some musical douchery"

Musical douchery by Nooche13 February 26, 2011