Eu errei, fui moleque is a common Brazilian Portuguese expression, with moleque shortened to mlk in internet slang, used to admit fault in a casual, self-mocking way. The clipped audio version spread through Brazilian TikTok, WhatsApp shares and short video edits, where creators reuse the same confession over unrelated fails. Its appeal is the contrast between the serious tone of admitting wrongdoing and the trivial size of most mistakes shown on screen, which keeps the phrase recognisable even to viewers who do not speak Portuguese fluently.