A man was sitting alone in his office one night when a genie appeared in a puff of smoke and said, “And what will your third wish be?”
The man looked at the genie and said, “Huh? How can I be getting a third wish, when I haven’t had a first or second wish yet?”
“You have had two wishes already,” the genie said, “but your second wish was for me to put everything back the way it was before you made your first wish.
Thus, you remember nothing, because everything is the way it was before you made any wishes. You have one wish left.”