I was thinking about "Wendy" this morning and had a small realization about the structure of the third verse. There's a line break in between "The farthest thing from my mind" and "Was the day that I'd wake up to find / My Wendy, Wendy left me alone" so that the subject ("the farthest thing") and predicate nominative ("the day that I'd wake up to find...") are separated. Such a structure illustrates the distance of that "farthest" (even though it's used more metaphorically).