Ala Bahma, the world renown magician is performing at Bijou Theater, amidst a lot of fanfare. (Billboards announcing this event are everywhere.) It turns out the slob magician is the one posting all the notices. He makes the mistake of posting on on a tree in which Bugs is occupying. (That's the first time I've seen Bugs living in a tree. What's with that?)
Anyway, Bugs gives the guy lip and the portly one throws a blackberry pie in the rabbit's face. It is then we hear the famous words, outside of "What's up, doc?" of a BB cartoon: "Of course, this means war!"
Unfortunately, the war isn't much. It would have been 5-10 years later in the Looney Tunes cartoons but these early 1940s ones weren't very wild. They were very tame - too tame - compared to the 1950s editions. In other words, not a lot happens here.
Also, what's with all the big kisses on the lips? It seems to be another trait of the period, along with the corny humor. I see it here several times and in other cartoons of the early '40s? Kissing your opponent on the lips.....was that supposed to be funny?