Long-Haired Hare

 Charles M. Jones, Long-Haired Hare, USA 1949

And here's one of the best.

Now, I could leave it there but let's dig a bit. We open with Bugs plucking a banjo and singing "A Rainy Night in Rio". Which wouldn't be a problem, except opera singer Giovanni Jones is trying to rehearse for his show that night. He smashes the banjo. "Hmm, music hater" deduces Bugs. 

Jones continues, but again he is interrupted. This time Bugs is strumming "My Gal is a High-Born Lady" on a harp. This ends the same. "Hmm, rabbit hater"

Jones tries again, but this time it's a tuba that interrupts. He yanks Bugs through the instrument. At which point Bugs then declares war. 

From there Bugs utterly destroys Giovanni in the best way possible. You got a perfect snobs V slobs story with Jones being the snobby opera singer taking on the popular music singing rabbit. Of course, Bugs is kind of doing this right in Jones' backyard, so I can kind of see his point. Also a perfect use of the Rule of 3.