Bluesky CEO Jay Graber sold out t-shirts inspired by the one she wore to troll Meta CEO Mark Zuckerberg in 30 minutes. At SXSW 2025, Graber wore a t-shirt reading "Mundus sine caesaribus" (a world without Caesars). Last year, Zuckerberg wore a t-shirt reading "aut Zuck aut nihil", a play on "aut Caesar aut nihil" (either Caesar or nothing).