Pica-Pau is the Brazilian name for Woody Woodpecker, created by Walter Lantz Productions. The waterfall barrel gag comes from Niagara Fools, the 1956 cartoon where Woody keeps trying to ride Niagara Falls in a barrel despite a park ranger stopping him. The stretched scream during the drop became a standalone meme in Brazil, shared on soundboards and in WhatsApp groups under searches like barril do pica pau and pica pau nas cataratas, and it is still used whenever someone falls or loses control.