No Oranges

A little old lady walks up to a grocery store manager and says, "Excuse me, sir, but I can't find the oranges."
"Well, the manager says, we may be out of them or maybe they've been moved." The old lady walks away and then comes back in a few minutes, and says, "Sir, I still can't find the oranges."
"In that case, says the manager, we're probably out of them. I think we'll get another shipment in a day or two."
The old lady again walks away, but then comes back again and once more tells the manager, "I've looked everywhere, but I still can't find the oranges."
Frustrated, the manager says "Ma'am, how do you spell the "tom" in tomatoes?" The lady says, "t-o-m." "That's right," the manager says. "And how do you spell the "pot" in potatoes?" The lady says, p-o-t. "Again, you're right, says the manager. Now, how do you spell the "fuck" in oranges?"
The lady thinks a minute, and says "There ain't no "fuck" in oranges."
The manager says, "Well, that's what I've been trying to tell you."