The sound comes from the seagull gag in Finding Nemo, released in 2003. In the German dub of the film, the birds repeatedly yell "Meins," making the moment especially recognizable to German-speaking audiences. That short quote spread online because it is easy to loop and instantly communicates greedy group behavior. It still appears in meme edits, reaction videos and chat jokes whenever many people fixate on one thing at the same time.