500 Easy Pieces

"500 Easy Pieces" (also known as 500 Small Pieces) is an episode of The Itchy & Scratchy Show and a Butterfinger television advertisement.

Plot
Scratchy visits Dr. Itchy's office. Itchy puts the earpieces of a stethoscope into Scratchy's ears, then goes to the other end of the stethoscope and eats a Butterfinger. Amplified by the stethoscope, the sound of Itchy crunching the Butterfinger causes Scratchy to shatter into pieces.

Bart, watching the TV and eating his own Butterfinger, laughs and says, "Bite my Butterfinger!"

Scratchy instead says "From Nestle".