Put it at the exact moment of the mishap, before a Vine Boom Sound Effect marks the bigger crash, then follow with a SpongeBob Fail Sound Effect to close the gag. That order keeps the pig reaction first, the crash second, and the fail joke last.
About this sound
This is a very short, high-pitched cartoon pig squeal, under a second long, with a sudden rising yelp that sounds startled and over-the-top. It feels instantly silly and panicky, turning a small mishap into a playful punchline. It comes from Angry Birds Pigs Out, a fan-made flash game centred on the green pigs, where it marks a pig being hit or launched.