Cartman taunts with a mocking singsong 'nya-ya-ya', boasting about a cruel prank — the kind of smug, obnoxious moment editors drop in when a character (or real person) deserves mockery.
WHAT'S SAID “Nya-ya-ya-ya-ya-ya-ya, I made you eat your parents! Nya-ya-ya-ya-ya-ya-ya!”
USE IT FOR punchline · reaction · roast