tá com brincadeira is a common everyday expression in Brazilian Portuguese, used when someone cannot quite believe what they have just heard. Online, the short recorded version became a shareable reaction clip on soundboards and in meme edits, passed around because the phrase needs no setup and works even for viewers who do not speak Portuguese. Its popularity comes from timing and tone rather than a known character or show, and creators keep reusing it for pranks, fails and tall tales where a quick incredulous response is funnier than an explanation.