This is almost verbatim from a story my friend Marge told me in college. I think she was on the NYC subway when she overheard the conversation.
I also like the slightly blurred line here of whether Bruno is making fun of the loonies on the bus, or if she IS one of the loonies on the bus.
Ah, what Bruno is saying here makes more sense with your comments. When I originally read this, I didn’t think of the guy as a loony – I was seeing it as a man verbally abusing his wife. In that light, Bruno’s line seemed to be a non-sequitur.