Mrs Doubtfire is a 1993 American comedy film starring Robin Williams as Daniel Hillard, a divorced father who disguises himself as an elderly British nanny to stay close to his children. The run-by fruiting moment comes during his feud with his ex-wife's new partner Stu, when a thrown lime is blamed on an unseen attacker. The line became one of the film's most quoted jokes, circulating in clips, quote pages and meme edits for decades because Williams' deadpan invention of a crime makes a minor prank sound absurdly serious.