Spongebob Squarepants - Magical Erasing Board
During the first parts of the episode, on the blackboard scribbled is words that say Art Class 101. When Spongebob comes in, and Squidward is about to draw the circle, Art Class 101 has dissapeared, and it is a blank chalkboard. Does the board erase itself?
The Spongebob Squarepants episode "Artist Unknown"