The Ghost of Christmas Future Imperfect + seafood

Mark Liberman (Language Log) collects three funny cartoons on this theme. Of course, and unrelated to Christmas, this reminds me of the classic joke:

A man is on his first visit to Boston, and he wants to try some of that delicious New England seafood that he'd long heard about. So he gets into a cab, and asks the driver, "Can you take me to where I can get scrod?"

The driver replies, "I've heard that question a thousand times, but never in the pluperfect subjunctive."