Definition of the word " coincidence "

A chicken farmer went to the local bar ....He sat next to a woman and ordered champagne.

The woman said:" How strange, I also just ordered a glass of champagne".

" What a coincidence " - said the farmer, who added: " It is a special day for me .... I'm celebrating"

" It is a special day for me too, I am also celebrating!" said the woman.

"What a coincidence" said the farmer.

While they toasted, the man asked: " What are you celebrating?"

" My husband and I are trying to have a child for years, and today, my gynecologist told me that I was pregnant".

"What a coincidence!" said the man. " I'm a chicken farmer and for years all my hens were infertile, but now they are all set to lay fertilized eggs. "

"This is awesome" said the woman. " What did you do for your chickens to become fertile?"

" I used a different rooster " the farmer said.

The woman smiled and said:"What a coincidence"