Hare Brush - S2.E14

Introduced by Bugs, Harry the Brush explains his role in the animation of cartoons wherein Claude Cat schemes to implicate bulldog Marc Antony in the confining by Claude of kitten Pussyfoot within a glass jug, a squirrel toils with a particularly tough nut to crack, and Daffy is at the mercy of the mischief of what he says is a "slop-artist".