I understood that a “dog’s breakfast” was “a p!$$ and a good look round” . . . i.e. nothing at all.
Oh my gosh — that’s even funnier! Way to go, Roberts!
The normal definition of a “dog’s breakfast” is a jumble, a SNAFU, a mixture of the unknown, disgusting, and the barely identifiable; it is intended to refer to a pile of vomit and/or garbage.