Place it right after the request or question in your edit, then follow it with the Bruh Meme Sound Button if the asker keeps pushing, or switch straight to the Fail Sound Meme Button when the refused idea collapses on screen.
Über diesen Sound
This clip lasts under a second and features Baymax saying Nein, the German word for no, in his calm, gentle voice. The effect is funny and disarming, because such a definite refusal sounds warm and caring rather than harsh. He is the personal healthcare companion robot from the film Big Hero 6.