Lyric discussion by Salty Kevin 

some anon on wikipedia uses this song as synecdochic of the entire meaning/form of 69 Love Songs in general. He or she (and not me) writes:

Another way of understanding 69 Love Songs is through Merritt's praise of an artist (Laurie Anderson) who "write[s] heartbreaking melodies with words that make fun of heartbreaking melodies."[3] Consider "Yeah! Oh, Yeah!" where Stephin and Claudia, playing jilted lovers modeled closely on Sonny & Cher, sing their complaints to one another, overplaying and overstating their grievances such that their words become garish declarations of woe ("what a dark and dreary life / are you reaching for a knife?") to which the other character isn't really capable of responding but must still follow in tone ("yeah, oh yeah"). The lack of a firm distinction between content (what is sung) and form (the way it is sung) implies that this couple lives and dies by virtue of how persuasively they can sing to one another, and illustrates the persistent Magnetic Fields songwriting device of trapping a character within the conventions or formalities of a genre.

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