There are all kinds of errors in music today besides grammar and arithmetic ones, such as in the American novelty rap record "Baby Got Back".

The error in that song is a journalistic one and it's buried in the story; the main line of it is "I like big butts and I cannot lie" and the whole song then fixates itself on the rather tedious announcement that he liked big butts but ignores the more interesting psychological fact that he cannot lie!

James Sherwood