Pears
Riddle: There is a tree in a yard with some pears on it, the wind starts to blow, and some of them fell off, however, there are no pears on the tree or the ground after the wind blows. Why?
Answer: There were two pears. One fell off, and one stayed on so there wasn't pearS on the ground or on the tree!
Source: https://www.riddles.com/3703
