A running gag in this series has Lucy Loud startling someone, or some people, with her presence whenever a crow caws or an organ pipe plays offscreen. This is a list of each time she does so, sorted by episodes from the Shorts, Season 1, Season 2, and Season 3.
First, she scares Lincoln, Lori, and Lisa by appearing right behind them to present to Lori her poem dedicated to Bobby as thanks to Lori for driving her to the cemetery.
Then she scares Lincoln and Leni when she wants to help them with the driving lessons because she can't write any more Bobby poems.
She appears right behind Lincoln to greet him a good morning and asks for a word that rhymes with "choose".
She appears twice in the hallway when Lincoln is skating down it; the second time, before she can ask for a word that rhymes with "blame", he gives her some suggestions without being startled.
She is right behind Lincoln and starts reading her poem called "Failure" to him.
She appears next to him outside his room after he changes shoes after stepping in Lily's dirty diaper and continues reciting her poem.
She appears behind him to continue her poem until he tells her to stop and go to the car.
She sneaks up behind Lincoln in his room twice; the first time is to join him in his quest to find out who clogged the toilet, and the second time is to thank him for taking the rap for her.
She, along with all her other sisters, appears not only right behind the front door but also right behind Lincoln outside to scold him for ditching them and not taking them to Burpin' Burger.
She slams open the door to the Loudparents' room after Lincoln tries to use Lisa's chicken soup blaster to give Rita some soup. Lincoln is especially scared because Lucy was supposedly infected.
