Place this clip at the very end of a reaction edit, after the request or bad take has played out in full. Follow it with the Nelson Ha Ha sound if the target deserves mocking too, or precede it with a wrong answer buzzer when a quiz-style fail sets up the rejection.
About this sound
A three-second Polish voice clip of Major saying pocałuj mnie w dupę in a direct, confrontational tone with no music behind it. The line lands like a blunt kiss-my-ass rejection, and the feeling is rude, funny dismissal — annoyance turned into a short verbal slap that cuts a conversation off instead of arguing further.