Lyric discussion by ringwormone 

Cover art for Oh Comely lyrics by Neutral Milk Hotel

I think it's about some guy's mostly sexual relationship with someone. She's more important to him than he is to her, and he can't be with her for some reason so he can't protect her from other people. Maybe "your father made fetuses with flesh-licking ladies while you and your mother were asleep in the trailer park" is about the guy and the girl and the guy's family. The guy talking to his kid. Or about the girl's childhood, explaining why she keeps sleeping with someone she doesn't care about. Or she's a prostitute he got involved with.

I completely agree with this. I was just going to post the same thing.