What does reheating nachos mean on TikTok?

The slang term “reheating nachos” means taking inspiration from a previous work, or reusing elements from an existing work to create something new. It’s often used in the context of art, music, and other creative fields. For example, if one pop star put out a song that was heavily influenced by a past pop star’s work, you could say that the new popstar is reheating the past pop star’s nachos.