Pan Am's logo was known as the "Blue Ball".
National's old Sun King logo was known as (since NA
flew most of their flights from NYC-FL) "The Sunburned Jew".
Southwest's new colors are "Beach Balls".
Someone mentioned Continental's "Brass Ass" livery. Their slogan was, at that time, "The Proud Bird with the Golden Tail" but it was more commonly known as "The Loose Goose with the Brass Ass".
Spirit's new "digital" livery - "Energize, Scotty!"
Freight Dogs Anonymous - O.O.T.S.K.
DAMN! This SUCKS! I just had to go to the next higher age bracket in my profile! :-(