Posted by Ben Lappin on September 30, 2005
This line appears in a musical first performed in 1914 called Lady Luxury. It is unclear whether it is an expression of actual thankfulness or frustration: the character utters it after his romantic opposite has insinuated that she likes him and then fled the room in tears (due to his supposed ill deeds). I read about the expression "to be a Jonah," and that seems the most likely source, but I can't fathom why it would be phrased this way, as I can't discern any particular twosome of things that would be referenced here.
It may also be "I think my Jonah's twins," but this makes less sense.