The sound comes from Pixar's Finding Nemo, released in 2003, where a flock of seagulls on a Sydney harbour buoy spots the clownfish and immediately starts shouting mine. The scene became one of the film's most quoted moments, and the simple chant was easy to quote, imitate, and remix. Online, creators lifted the short chant for reaction videos and memes because it needs no context: one repeated word instantly signals selfish excitement. Its brevity and cartoon energy explain why it still circulates decades later.