It's a funny line by a comic who understands that sometimes the funniest things are the most unexpected and only vaguely explicable. Detachment from meaning and very loose if any attachment to meaning are features of comedy.
If you, like me, agree that this line is very funny, you probably realize that it's funny because it defies all expectation, it's completely unpredictable and doesn't have an easy explanation, nor is it meant to.
Drewski, I disagree that you made no contribution by offering that Banjo is joking. That's exactly correct.
Banjo is entertaining Miss Preen, Sheridan, and perhaps most of all himself by being zany and preposterous. (Of course he could also be really hitting on Preen, a choice the actor can easily make, given that Banjo is a lothario, whether in antic, earnest, or both the actor can decide).
Whippersnapper, I would suggest you need to take the "why" of this behavior and text as serious as any other behavior and text from any other character. You need to discover what about Banjo makes him need to be the way he is, how far he will go for a laugh, what he gets out of it, etc.. And what makes him so confident that the line is not only amusing but the ideally funny line for that moment. And, as your question indicates, you are taking it seirously.
But if you are looking for any kind of intended literal meaning, e.g. what the rye bread would have to do with any actual tryst between Preen and Banjo, you might well be asking the wrong question. Because, as Banjo knows better than anyone, the charm of Preen bringing rye bread when she would come to his room has only an amusingly wacky, disconnected relationship to reality.
Updated On: 8/30/16 at 12:50 PM