Edna Krabappel is Bart's fourth grade teacher on the show The Simpsons. Edna is voiced by Marcia Wallace and is portrayed as a lonely divorcee. She previously dated Skinner, but now mostly will throw herself at anything that's remotely willing.
Bart: Boys and girls, Mrs. Krabappel, I come before you today to solve a riddle that has plagued mankind for centuries: What has four legs and ticks?
Milhouse: A walking clock?
Nelson: A walking clock!
Martin: I'd wager he has some variety of walking clock in that box!
Edna: Bart, is it a walking clock?
Bart: What?.....No, it's my dog.
Now, I don't want you to worry class. These tests will have no affect on your grades. They merely determine your future social status and financial success. If any.Mrs. Krabappel