When Daffy tries to spring into action as Duck Dodgers for the climax, he puts on a jetpack and says "Duck Dodgers to the rescue!, after which the jetpack blows up. He tries a few more jetpacks when he says it, blowing up each time. Finally, he stares at a jetpack, flatly says "Duck" and it explodes.
The entire Psycho parody with Bugs, complete with his over-the-top screaming and him clearly pouring Hershey's chocolate down the drain.note A nod to the fact that the blood in the original Psycho was actually chocolate sauce.
Not to mention that the whole reason Bugs did the whole thing in the first place:
Bugs: Doesn't anyone knock anymore?'''
The entirety of the painting chase with Bugs, Daffy and Elmer.
The scene where Yosemite Sam, lights a match, sees he's in a room full of TNT, and gets blasted into the air, so high, the heroes see him from their flying car.
Bugs: Look, a shooting star. Quick, everybody make a wish!
Also the scene where D.J. throws a guard onto a poker table and is barked at by several dogs who were playing poker (such as Sam Sheepdog, Charlie Dog, Barnyard Dawg, Ham and Ex).
The scene where Foghoen Leghorn is a card dealer and D.J. keeps saying "Hit me" to get a card. When Sam reaches his limit.
Mother's reaction when she finds out DJ already knows about the Blue Monkey; "What is the point of making them pinkie swear?"
Daffy getting his head severed by a laser from the spy phone. Later, his body tries to pick up his head, only for Bugs to kick it away from him.
Take a close look at the nameplates of the Acme Board of Directors; the positions are things like "VP of Rhetorical Questions" and "VP of Never Learning". Apparently that's not the first time he's been skeletonized by Taz...
Bugs: Usually, (dresses up like Marilyn Monroe and speaking in a soft, sultry voice) I play the female love interest. Michigan J. Frog: (in the background) HELLO MA BABY HELLO MA HONEY! Kate: About the crossdressing thing: In the past, funny! Now, disturbing. Bugs: (changes back and wipes the lipstick off his mouth) Lady, if you don't find a rabbit with lipstick amusin', then you and I got nothin' to say to each other.