A incredibly rude, arrogant, and cruel young boy. Generally will hang put with a single, small group of children that he will pretend to like, but just insults and humiliates them for entertainment. Any boy that can compared to Eric Cartman from South Park.
"Dude, my brother lit my neighbor's cat on fire. He's such a Cartman."
"I swear, that Cartman-kid is more racist then Jim Crow!"
""Hey, check out that Cartman stuffing his face! He looks like a pig!"