have the last laugh
get the last laugh
To make someone seem foolish for having laughed at you.
Other schools laughed at us when our little team entered the state championship, but we had the last laugh when we won it.
he laughs best who laughs last
who laughs last laughs best
A person should go ahead with what he is doing and not worry when others laugh at him. When he succeeds he will enjoy laughing at them for being wrong more than they enjoyed laughing at him. A proverb.
Everyone laughed at Mary when she was learning to ski. She kept falling down. Now she is the state champion. He laughs best who laughs last.