Nina Tucker appears in Fullmetal Alchemist: Brotherhood, the 2009 anime adaptation of Hiromu Arakawa's manga, where her story becomes one of the series' most remembered tragedies. The clip circulates as a short English-subtitled moment from that arc, shared on soundboards and in fan edits because viewers recognise it instantly. Its lasting use comes less from a catchphrase than from the character herself: Nina represents innocence caught in an adult experiment, so the sound instantly signals loss, guilt, and a story turning dark.