Songs directly addressed to someone non-famous (a friend or lover or half-brother, perhaps) who is named in the song but not in the title

Future of the Left "Arming Eritrea" is directed, angrily, to someone named "Rick." I remember it getting hyped on ILM and me being totally baffled as it seemed to be the whiny screechings of a teenaged lout, grounded by his stepdad.