A Bit of 'Cosmological' Humor from William Lane Craig

Reading a bit from Theism, Atheism, and Big Bang Cosmology, I came across this bit of humor from William Lane Craig:

Thus, throughout this broader Universe-as-a-whole, which is considered to be a quantum-mechanical vacuum, fluctuations occur which blow up, rather like the ears on a Mickey Mouse balloon, into distinct material universes. But immediately the question arises, Why, since all the evidence we possess suggests that space is expanding, should we suppose that it is merely our region of space (and regions like it) that is expanding rather than all of space? (151)