The Whites basement Q hideout is where the Whites host QAnon meetings and consolidate QAnon information in their home. It makes its only appearance in the Season Twenty-Four episode, "South ParQ Vaccination Special".
Bob White is the leader of QAnon, a conspiracy theory group who believe that there is a secret cabal of Satan-worshipping, pedophilic cannibals based in Hollywood that must be stopped. He hosts a QAnon meeting in his basement after he is told by Herbert Garrison, "The Chosen One", to "blow shit out your dickhole". He interprets this to mean that QAnon has to get their message out to children. They start the home tutoring service Tutornon for this purpose.
Later, Garrison and Mr. Service confront the Whites about how private tutors have taken his students away from school. Bob White explains to them "the truth" about the Hollywood Elites and shows them the information in his basement. There are various supplies, banners and information boards related to QAnon for the purpose of stopping the Hollywood Elites.
The Whites basement Q hideout is a dark dreary place with gray walls and a gray floor. It contains supplies and weapons like first aid kits, bulletproof vests, knives and guns. There are various QAnon posters and flags on the walls. There is an information board titled "Whistlin' Willy's Pedo-Ring". Bob shows Garrison an information board at a desk relating to the key date, March 4, 2021. The board has information and photographs of celebrities who are allegedly part of the Hollywood Elites cult, including Matt Stone and Trey Parker. There is a gun closet from which Bob takes guns out to stop the elites, only to have lasers vaporize the guns.