The universally acknowledged 'changing the goalposts' extended metaphor is applied with a vibrant interplay between character and animator in this mini-meta-masterpiece. A frustrated Daffy usually acts as a catalyst for genius. Chuck Jones is a dab hand at orchestrating exactly that.
8 - I remember watching this one dozens of times in my preadolescence, not knowing a word of English at the time, and still finding it absolutely hilarious. That last bit in particular always cracked me up. Chuck Jones was a master of the visual gag. Fuck the fourth wall, too.