Today’s Zits:
The dad’s “I don’t know” conveys that he’s unsure of his opinion on the subject (whatever that is), so he says “Ask Mom”, meaning ‘Ask Mom what she thinks”, with ellipsis of the Wh-clause object of ask, but with understood reference (within that object) to the mother. But Jeremy takes the other possible reading, involving reference to the father — i.e., ‘Ask Mom what I think’ — which, though possible, is unlikely in context (how should the mother know what the father thinks, when he doesn’t know himself?).
