Susie thought she was hilarious, but I didn't quite get it.
It did seem to be a bit odd that almost all women on television are a certain size and shape (and age) and Miranda, as the exception, seemed to be more concerned about the fact that she wasn't that certain size and shape than anything else. I know that Ronnie Corbett and Ernie Wise went on and on about their height, and, in a way, that was about television comedy finding it's way away from radio, but plenty of comedy doesn't rely on the appearance of the comic.
And, after all, we've only got Jim Jeffries word for it that he has a small dick.