Place it right after the pointless action peaks, then follow it with Oh My God Wow for a bigger reaction, or cut to No No Wait Wait when someone tries to explain it away.
About this sound
This is a short three-second Portuguese voice clip of Smzinho asking 'Pra que isso, japonês?' in a puzzled, teasing tone. It lands as playful disbelief, the kind of confused reaction you use when someone does something pointless or over the top. The delivery is quick and expressive, making the question feel more like a joke than a real complaint.