[have the last laugh] или [get the last laugh] {v. phr.}
Оставить кого-л. в дураках за то, что тот посмеялся над вами.
* /Other schools laughed at us when our little team entered the state championship, but we had the last laugh when we won it./
Ср: HE LAUGHS BEST WHO LAUGHS LAST, TURN THE TABLES.