Answer: saying the opposite thing usually for humor
Here is an example of irony:
Denise threw the bottle on the florr while John was looking. John asked "Did you drop the bottle?" Denise replied "No, I thoguht you were looking" with irony.
In the story macbeth had said it
The punctuation is correct if that is how how the statement started and ended.
I can just give you a suggestion of a story that I have watched. It's " How the Grinch stole the Christmas". The theme of the cartoon is that Christmas is not about presents. One evidence from the cartoon is that after Grinch stole all the presents from the people's houses, they were still happy and they were singing together by holding hands like the presents were nothing for them. At the end the Grinch realized his mistake and gave back all the staffs that he stole.
I hope it helps a little.
When a sentence have two or more subjects