The initial example is inane. I believe XKCD has an appropriate comment on the matter.

In more detail: While strictly speaking "Frodo Baggins" may not be a unique identifier, there is a fictional person people will understand it to mean without additional context; as such, without that additional context, it must be taken as the usual meaning of "Frodo Baggins". Hence we get it "wrong" only because you used the name "Frodo Baggins" with a meaning other than its usual one. (Analogous to the comic.)

If you did something to indicate that it need not be the usual Frodo Baggins -- for instance, opening it with "Someone named Frodo Baggins", and the effect still (or rather actually) occurred, that would be an example.

Edit: Oh, hell. Just took a look at the references. I had actually thought this was intended seriously...