Place it right after the unbelievable line, then follow it with Oh My God Wow for a bigger reaction or Ceeday Huh as a second beat. Save No No Wait Wait for the moment someone tries to explain, so the edit moves through three reactions in that order.
About this sound
This clip is a voice saying what in disbelief, lasting almost eight seconds and giving the reaction room to sink in. It captures the exact beat when something makes no sense and the listener needs a moment before responding. The tone feels funny, awkward and genuinely stunned, turning a one-word question into a complete response to unbelievable news.