Place this clip right after the request in your edit, then follow the walk-away with the Bruh Sound Effect for the other person's reaction. For a bigger pile-on, add Emotional Damage Meme Sound after that, keeping the refusal first so the joke builds in order.
About this sound
Dr. Eggman's 3.6-second refusal, shouted in a squeaky, cartoonish voice as he declares he's taking something away instead of sharing it. It feels gleefully petty and childishly triumphant, like a tantrum turned into a victory lap. The clip comes from Snapcube's fan dub of Sonic Adventure 2.