Right but how did it apply in the context?
3. baba booey
This is the nick name given to Howard Stern's show long time producer, Gary Dell'Abate, by Howard Stern.
Howard gave him the name when he mispronounced "Baba Louie" an animation that Gary was was collecting. Howard goofed on him all day as usual and they thought it was going to end there. It never did.
It now is a popular term that Howard Stern Show super fans use as a greeting or a sign referring to the show and its antics.
It is constantly used when people prank radio or tv stations on the air or on set and yell baba booey.