Of course, it would be wrong to suggest this sort of mayhem began with rock-and-roll. After all, there were riots at the premiere of Mozart’s The Magic Flute. So, what’s the answer? Ban all music? In this reporters opinion, the answer, sadly, is ‘yes’.— Brockman
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.


As you might guess, Bart squeaks the chalk while writing this.
The Last Temptation of Homer

Lisa's Date with Density
A reference to the voice artists striking for more money.
The Wizard of Evergreen Terrace
NO ONE CARES WHAT MY DEFINITION OF "IS" IS
I WILL NOT PLANT SUBLIMINAL MESSAGORES
THIS SCHOOL DOES NOT NEED A "REGIME CHANGE"
I AM NOT SMARTER THAN THE PRESIDENT
Season 12 starts 27th September.