The phrase comes from everyday Brazilian Portuguese, where encher can mean to bother or pester, so ah vá encher outro works as a casual way to send someone away to annoy another person instead. Shared as a short voice note style clip on soundboards, it spread through chat humour and reaction edits rather than from a known film or show. Its appeal is its everyday tone, which makes it feel like a real reply from a fed up friend, and it remains handy for quick dismissive jokes online.