Place it right after the smoke appears and before the group's reaction shot, then follow it with Bruh and save Oh My God Bro Oh Hell Nah for the moment someone denies it.
關於此聲音
This is a short spoken clip lasting about 2.6 seconds, built around a single blunt announcement that people are smoking weed. The voice is direct and matter-of-fact, with no music or extra effects behind it. It feels funny and pointed, like catching someone in the act and calling it out loud for everyone nearby to hear.