Regina Rouca refers to the hoarse quality of the voice in this Brazilian Portuguese clip, with mentira meaning lie. The recording circulates on soundboards as a short reaction audio, shared in the same way as other WhatsApp-style voice memes in Brazil. Its appeal comes from recognition: Portuguese speakers understand the word instantly, while the strained tone makes it funny even without context. It has stayed in use as a quick, reusable punchline for dishonesty, teasing, and dramatic disbelief in short-form video and messaging.