Put it at the peak of a failed stunt or surprise reveal, after a short Goofy Ahh Sounds build-up and before the fallout lands. Follow it with Emotional Damage when the joke is about the aftermath, or with Bruh when the reaction should stay deadpan instead of escalating.
About this sound
This is an 8.6-second scream clip named for Tinky Winky, centred on a single extended yell. It feels sudden and silly, like someone overreacting to something small, and it works as a burst of playful shock rather than a serious scare.