Eric Cartman is one of the main characters in South Park, the animated series created by Trey Parker and Matt Stone that premiered in 1997, with Parker voicing Cartman's distinctive high-pitched delivery. The na na na chant itself is a classic playground taunt, and Cartman's exaggerated version became a recognisable shorthand for his smug, bratty personality. Clips of the chant spread through forums, edits and soundboards in the 2000s and 2010s, and it remains popular because a few seconds immediately signal teasing without needing any setup or context.