French Rarebit

Rod Scribner animates Bugs hows how to prepare Louisiana Back Bay Bayou Bunny Bordelais à la Antoine.

Not only does Bugs twist the other characters into hilarious shapes, Bugs himself changes shape almost unobtrusively; we can't really see some of the ways his body changes shape (even Bugs's hat changes shape sometimes), but we can sense it, and it makes the scene funnier without calling undue attention to its own cleverness, as "wacky" animation too often does.