There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?
Day and night.
What single letter can you swap to make a cold bear become hot?
Swap the p in polar bear and it becomes solar bear.
A man wants to buy a used car. He finds a beautiful Buick for $9500, but he buys it without paying a dime. How did he manage this?
If he is paying $9500 he wouldn't use any dimes to pay for it.