There used to be a "SubTalk" subway ad (an internal-promotions tool for the MTA) about bus-to-subway transfers, one sentence in which read: "You can transfer from subway to subway, subway to bus or bus to bus." The type was laid out so that the final line of the ad read like this:
bus or bus to bus.
I always thought that was really weird and discomfiting, and I used to look at that line of type and say "bus or bus to bus" to myself -- and also "to bus or bus to bus," using enjambment from the previous line. This was already a few years ago, but I am still fascinated by the way those words look together -- the existential Hamlet echo and the absurdity of the context. It is still important to me, and I think that its still being important is also important.
The inclusion of a comma before the word "or" -- the serial comma or "Oxford comma," a grammar convention that I usually uphold, though it is never strictly necessary -- would have made the whole thing totally insignificant.