My theory which mine, and is my theory, is that not only that Brontosaurs are not only thin at one end at the beginning, thick in the middle, and long a the end, but that this one of Cleese's most funniest parts on the shows. And that theory, belongs to me.

Can I just say here, for one moment, that I have a new theory about this sketch?  What is my theory?  What is my theory that it is?  Yes.  Well, you may well ask what is my theory. And well you may. Yes, my word, you may well ask what it is, this theory of mine. Well, this theory, that I have, that is to say, which is mine.