Place it at the end of a begging exchange, after the request has been repeated once too often, then follow it with the Bruh sound for a flat reaction or the Emotional Damage sound when the refusal needs a bigger payoff.
About this sound
A short voice clip, just under five seconds long, built around the line 'my mommy said no more', spoken in a young, pleading voice that makes the refusal sound small and final. It feels funny and a little defeated, like a child giving up after hearing no one too many times.