Baldi comes from Baldi's Basics in Education and Learning, the 2018 indie horror parody of old educational games in which a creepy teacher hunts the player through a school for answering maths problems incorrectly. Clips of his shouting became popular in YouTube and TikTok edits because the character mixes a cheerful school setting with sudden aggression, making him easy to reuse as a joke authority figure. The sound still appears in fail compilations, gaming reactions and classroom parody videos, where his voice alone signals that someone is in trouble.