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.
About this sound
Woody Woodpecker screaming while riding a barrel over the waterfalls, a classic cartoon clip Brazilians use for falls, fails and wild rides online.
This is the drawn-out scream from Woody Woodpecker as he plunges over a waterfall inside a wooden barrel. The three second clip is almost entirely his rising, panicked yell, stretching out as the barrel drops and the water roars underneath. It captures that exact moment when a character realizes there is no way back and just has to ride it out. The sound feels frantic, helpless and funny at the same time, which is why it works so well as a reaction to a sudden fall, a mistake, or a plan going completely out of control.