The Simpsons/Season 31

"Lisa: Why do you always wreck the stuff I care about? Big brothers are supposed to be helpful and a little nice. I wish I could un-brother you."

"Bart: Not if I un-sister you first."

"Lisa: Fine. [Grabs her tiny scissors on the floor] By the power of safety scissors, I hereby sever the sibling bond. [Cuts the sibling bond between her and Bart] Snip."

"[Bart groans sadly then grunts angrily. He picks up two toy horses and starts making fart sounds like they're farting at Lisa. Bart makes one more fart noise with his butt before leaving Lisa's room.]"