Answer:
There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?
The answer I give is yes, but what I mean is no. What was the question?
On which day of the year do fewest people die?
Mary gets in the shower, but surprisingly her hair is not wet when she gets out. How is this possible?
Twelve pears hanging high, twelve men passing by. Each took a pear and left eleven hanging there. How can this be?
It is something you make after you've weighed your options.