Place this clip right after the reveal in your edit, preceded by a sudden suspense sting to build the beat. Follow it with no no wait wait when the culprit tries to explain, then cut to the group's next reaction shot.
About this sound
This is a short Portuguese voice clip of someone asking 'nao vei pq ce fez isso,' which means 'no, man, why did you do that?' in English. Lasting just over a second, it captures the stunned, half-laughing disbelief of being trolled by a friend. The uploader shared it as the reaction after a prank online.