Wrong usage (was Bootstrapping a cooperative conlang)

>Gary Shannon <fiziwig@...> wrote:
>If there is one universal constant in linguistics it is that there
>always have been, and always will be people who tell you that you are
>using the language wrong.
I remember an incident a couple of decades ago in a former parish when,
after a Sunday Mass, a lady corrected me for saying in my homily
something like "I'm done."  She maintained that that only applies to
food.  Being a person of equanimity I said nothing, perhaps thinking
that mine was a regional or perhaps familial use of the word (those PA
Dutch!).  One day while perusing the AHD, as is my wont, what to my
wondering eyes should appear but the lemma "done" with, as the FIRST
definition "finished."  I had been vindicated but, alas, too late to
rub the lady's nose in it.

Charlie