Programa do Ratinho is a long-running Brazilian variety show on SBT, hosted by the outspoken Carlos Massa, better known as Ratinho. His loud, unfiltered presenting style made the program a staple of Brazilian popular culture, and short clips of his catchphrases circulate widely as memes. The 'Boa Noite' greeting captures his theatrical persona in a single moment, which is why Brazilian creators lift it for reaction videos, compilations and WhatsApp audios. It endures because few sounds signal Brazilian internet humor as instantly as Ratinho's voice.