What do DC mean in TikTok?

Could you please elaborate on the meaning of "DC" in the context of TikTok? Is it an acronym for a specific term, a slang phrase, or perhaps a reference to a popular trend or challenge within the platform? Understanding the nuances of TikTok's culture and lingo is crucial for engaging with its diverse and dynamic user base, so clarifying the meaning of "DC" would be greatly appreciated.