Paredão culture comes from Brazil, where walls of stacked speakers are used at funk and street parties to deliver bass you can feel in your chest. Clips built around that idea spread online as a meme format, with a Portuguese spoken line complaining that in his time there was no paredão before the puh hits arrive. Short excerpts were reposted on soundboards and in edit communities, where creators kept the drop because the joke translates even if you do not speak Portuguese, the buildup promises something massive and the bass delivers it.