The clip comes from Brazilian television presenter Fausto Silva, known as Faustão, during a Domingão do Faustão segment showcasing a remote controlled barbecue grill. His delighted reaction when the grill actually ignited became a repeatable catchphrase in Brazil, shared in edits, group chats and soundboards. Ligou simply means it turned on in Portuguese, which makes the joke easy to understand even without the full segment. Its over the top delivery keeps it useful for any small success treated like a major technological breakthrough.