Virginia, you raise a good question. I agree with Mouserocks that Lois was probably too sleepy during the phone call to consider the implications of what Jimmy had said. But I would *not* want to be in Jimmy's shoes come Sunday morning!
I doubt Jimmy would even remember the conversation by then, so he couldn't even try to come up with a defense other than the obvious one: that he had been too drunk to be thinking clearly.
The fact that if this took place in or after S4, Jimmy would have been right about Superman (well, Clark anyway) being there would be completely irrelevant. Amusing, but irrelevant.
Joy,
Lynn
