Baba Booey began as a nickname for Howard Stern Show producer Gary Dell'Abate, who mispronounced the cartoon character Baba Looey on air. Listeners adopted the phrase and started shouting it during live calls, news broadcasts, and public events as a kind of inside joke for Stern fans. The shout spread beyond radio through prank videos, reaction clips, and social media, where its silliness made it easy to reuse out of context. It remains popular because it is instantly recognisable, short enough for edits, and signals playful disruption without needing any explanation.