It's a joke, and one I've always felt falls slightly flat in the stage version. It implies that he's immediately skipping town to get himself far away from the madness going on in the opera house. The line doesn't work unless the audience pays attention to it and knows where Frankfurt is.
In the film, it's changed to "I shall be in Australia," a generalized location even farther away, which makes the joke a bit more obvious. I saw the film several times in theaters and it always got a large laugh.
"I'm seeing the LuPone in Key West later this week. I'm hoping for great vocals and some sort of insane breakdown..." - BenjaminNicholas2
Updated On: 11/10/16 at 12:47 PM