Mm that’s a tough one. The ones that STILL make me laugh till I cry are as follows:
Duck! Rabbit! Duck! ( Best line: More training? More training)
The one with the Bull where bugs is the matador (can’t remember the title and my index is at home)
That’s opera doc. (Best line: Norf wind blow, souf wind blow! Hurricane! Typhoon! Smoooogggg!)
The rabbit of seville. (Trying to remember if there is any speech at all in that one... maybe at the end)
And the one with the opera singer where bugs acts ss the conductor Leopold.
Those are just my Bugs picks....
Each of the characters have at least a few classics... it’s nearly impossible to pick just one ...
Oh how could I forget Ali Baba bunny... and the one with the baseball team he takes on himself....