Jacob and Mindy Epstein just got married and moved into an apartment in New York City filling it with all of the precious items they received as wedding gifts. One day, they received in the mail two tickets for a popular show in the city, with a single line written on the envelope:
"Guess who sent them."
Jacob and Mindy assumed that it was a belated wedding present and while they enjoyed the show immensely, they spent the whole evening trying to figure out who the tickets were from.
On their return home from the show, Jacob and Mindy were met with a disastrous sight: their apartment had been stripped of every one of their wedding presents, every article of value in the apartment. And on the bare table in the dining-room was a piece of paper on which was written a note on an envelope:
"Now you know!"