Raj: Dude, there's so many cool things we could be doing tonight. Look. At the Glendale Galleria, "Put on your best zoot suit, it's a salute to Swing music in the center court near Macy's. 5pm to 9pm", huh, huh? A salute to zoot. Sounds like a hoot.
Sheldon: I'm sorry, Raj, I have no desire to salute any article of clothing tonight. Much less one that's linked to race riots in the 1940s.
Raj: Race riots?
Sheldon: The zoot suit riots.
Raj: Oh. I always thought that was some sort of after-Christmas sale.