Place it after the slow scene is established, then follow the complaint with Emotional Damage for a bigger reaction or Bruh for a shorter reply, keeping the waiting moment as the centre of the edit.
關於此聲音
A tired voice delivers one blunt statement about waiting close to forty minutes, in a clip lasting just under three seconds. The humour comes from how worn out and unimpressed the speaker sounds, which makes the complaint feel shared rather than bitter. Most people have lived through the same slow wait, so the line needs no context to be understood.