Krusty the Clown, you are under arrest for armed robbery. You have the right to remain silent. Anything you say blah blah blah blah blah blah.— Wiggum
One of the staples of the Simpsons' opening credits is the blackboard gag. Bart writes something on the chalkboard as a punishment, quite often ironic. Here we list them all, including screenshots where useful. Any episodes not listed here do not have blackboard gags.
Season 12 starts 27th September.