I agree about the overkill, but the point remains that there are two parts to the punchline:
(a) the teeth (Myers teeth are fine/no joke); and
(b) the grammar (Myers employed the usage that most of his audience already and erroneously uses/still no joke).
At least no joke the general public will understand and no joke that doesn't confuse someone like me because of (a) and (b). And hence, you may have noticed, no laugh.
And I might add (c), he had just referred to his girlfriend in the sketch with Richard III's "childhood friends", so it wasn't at all obvious that he was mocking himself as a hapless dater.
I think he miscalculated badly, unless you are telling me his plan was simply to amuse himself.
But that isn't to say I'm not a fan. Unless I love the host, Weekend Update is the only part of the show I watch.
Updated On: 2/17/13 at 07:45 PM