It all started when...
The rat pack was legendary for its Las Vegas strip performances.
For example,TO ATTRACT MORE GAMBLERS TO THEIR DOOR, the Marquee at the Sands Hotel might read Dean Martin—Maybe Frank—Maybe Sammy. Their appearances were valuable because the city would flood with wealthy gamblers. Their act (always in tuxedo) consisted of each singing individual numbers, duets and trios, along with seemingly improvised slapstick and chatter. In the socially charged 1960s, their jokes revolved around adult themes, such as Sinatra’s womanizing and Martin’s drinking, as well as Davis’s race and religion. Sinatra and Martin supported the civil rights movement and refused to perform in clubs that would not allow african-american or Jewish performers.