Put it at the very start of a scene, right before the moment it interrupts, then follow it with the Bruh sound effect for a deadpan reaction or the game show buzzer when the plan falls apart.
About this sound
This is a sub-second clip of a single sharp “Hey!” shouted in a bright, urgent voice, clean and instantly cut off. It feels playful and dramatic, like a sudden tap on the shoulder that snaps everyone to attention. It comes from the opening of the Lego City commercial meme, the line that starts the famous “A man has fallen into the river in Lego City” rescue quote.