Incredibles, The Easter Egg - Dash's Class

I found this accidently when trying to remember another easter egg, but it is really funny and I enjoyed it, hope you do too.
As Ive said you need the "nd disc edition for this easter egg. Select the 'deleted scenes' option and then wait for about 20 seconds, you will eventually see an icon in the shape of the robot from this film. To select it press the right arrows button and enter. On this you will end up wathing Dash's Classroom the events leading up to Dash putting the tack on his teachers seat. It is a cartoon sketch but it still has the humor. Enjoy!