The phrase translates from Portuguese as kissing while biting, and online it is searched mainly with Portuguese terms for biting the mouth or lips, which points to its circulation in Brazilian meme and short-video communities. Rather than coming from a widely documented film or television scene, it spread as a short reaction sound that creators reuse for flirtation and awkward humour. Its staying power comes from that instantly readable gesture: one small bite turns a normal reaction into a teasing, suggestive punchline.