A listener wonders why his girlfriend remarks “hubba-hubba” when he’s dressing up for the night. The flirty call had its heyday in the 1940s, when World War II soldiers would see a pretty lady walking down the street. Although no one’s sure of the origin of “hubba hubba,” new research suggests it might have evolved from a catchphrase used by the “Ki Ki, the Haba Haba Man,” an employee of P.T. Barnum. This is part of a complete episode.