"There are 12 apples in that bowl."
"No, there are 15."
"You dummy. 13. Maybe 14."
Chick in the back. "Hey look at me put my thumb in my nose!"
The drapes. Wonder where all the White House drapes have disappeared to?
Wonder no longer.
If there were only 12 apples, how would you divide them equally so 13 people would. each get an equal share?