“joe” – English explanatory dictionary

a too marvellous tale, a lie, or a stale joke. Abbreviated from
JOE MILLER. The full name is occasionally used, as in the phrase “I
don’t see the JOE MILLER of it,” _i.e._, I don’t perceive the wit you
intend, or I don’t see the fun of doing it,—whatever may have been the
request.

n. See Johannes.