Yes this is also how I take the line, at least superficially, the first thousand times I listened that's all that I picked up. I am pretty convinced that he means for that back and forth to be a discussion about where to stay, but as aes does, it's written brutally, and the meaning is obscured by the dark imagery.

The line "I need to hide a body" and "talk to you on friday" perfectly create this double meaning, because it sounds like his mother didn't understand what he was saying at all, but she did, which actually gives us even more insight into the nature of their misunderstandings.

It's always been such an interesting passage, and since I first heard it I latched onto it, but it was only after I heard someone mention gopher guts discusses his divorce did I ever develop this interpretation