Place it immediately after the reveal in your edit, letting a moment of Sudden Suspense build tension first, then follow it with Oh My God Wow for a second reaction that keeps the joke moving without repeating the same beat.
حول هذا الصوت
This is a short spoken exclamation of 'Mein Gott', lasting about a second and a half, delivered in a startled, emphatic voice. It lands as pure shocked disbelief, the sound of someone caught off guard by something unbelievable, clumsy or suddenly gone wrong. Its blunt, wide-eyed tone makes the surprise feel immediate and a little theatrical, without needing any extra explanation.