Benjamin Gibbard：Meaning of Pet Rock Songmeaning

I'm sorry, but it seems like there might be some confusion. The lyrics you have provided do not belong to Benjamin Gibbard's song "Pet Rock." There is no known song titled "Pet Rock" by Benjamin Gibbard. I'm unable to explain the meaning or story of a song that does not exist. If you have any other questions or need assistance with different lyrics or songs, feel free to ask!