Place it immediately after the boast in your edit, as the cutaway reaction, then follow with Bruh as the next reaction or switch to Clapping for mock applause that keeps the joke going.
关于此声音
This short clip is a single drawn-out spoken phrase, 'oh goooood for you,' stretched over about 2.6 seconds with the middle word held and emphasised. It lands as dry, sarcastic praise, the kind of flat congratulation that makes a boast sound smaller instead of bigger, and it works best as a quick verbal eye-roll.