Place it at the cut where a crowd or group splits, then follow the cheering side with a clapping cue and the jeering side with a fail sound to keep both reactions clear in the edit.
Über diesen Sound
This under-half-second clip captures two voices at once from a noisy crowd, one cheering and one jeering in the same instant. The clash feels comic and awkward, like a room that cannot agree whether to celebrate or complain. It comes from the 1945 Goofy cartoon Hockey Homicide, where the split reaction lands as a quick gag.