Place it at the end of a build-up, just as the next line would start, then follow it with No No Wait Wait for a second objection or Oh My God Wow for the next reaction in the sequence.
Bu Ses Hakkında
This clip is a single human voice shouting the word stop, holding the final sound out for almost three seconds. The stretched delivery makes the interruption feel urgent and a little ridiculous, like someone slamming the brakes on a conversation mid-sentence. It works best as a blunt, funny halt when words keep going too far.