Abestalhado is common Brazilian slang, especially in the Northeast, for someone acting silly, naive or plain foolish, softer than a harsh insult but still cutting. The phrase deixa de ser abestalhado circulates widely as a WhatsApp voice reply because it captures everyday scolding in a few words. Shared from chat to chat and reused on soundboards and in meme edits, it survives because almost every group has that one person who needs to hear it, and the familiar wording makes it instantly understood by Portuguese speakers.