Miss Veronica Crabtree, aka "Muffin" by those truck drivers who knew her closest. She was the boys' feisty bus driver who was always down to lend a kind word of advice like "Sit down and SHUT UP!" Ms. Crabtree had a brief stint as a stand-up comedienne, making it all the way onto the Tonight Show. But met an unfortunate fate at the hands of the Left Hand Killer and was murdered in "Cartman's Incredible Gift" (813).