Early in our relationship, my now-wife and I had a lengthy and oddly animated argument about the merits of the John Fogerty song "Centerfield." In retrospect, it was all about two young people who were rushing into a commitment that was (as it turns out) absolutely the right choice, but it was a pretty intense change and left us wanting to half-consciously set boundaries to make sure we stayed individuals. The argument itself never had that as anything other than subtext though, so it was just a stupid and and hilarious place to draw a line in the sand.
And for the record, if for no other reason than the opening bass riff, that song is a swamp-rock banger, the height of Fogerty's post-Creedence career, and makes every baseball game in the country slightly better because it might be played there.