He is noted for his catchphrase of "Eh, (carrot chewing sounds) ... what's up, doc?" and his feuds with Elmer Fudd, Yosemite Sam, Marvin the Martian, Daffy Duck, Witch Hazel, Rocky and Mugsy, Wile E. Coyote and a whole score of others. Almost invariably Bugs comes out the winner in these conflicts because that is in his nature. This is especially obvious in films directed by Chuck Jones, who liked to pit "winners" against "losers". Worrying that audiences would lose sympathy for an aggressor who always won, Jones solved the problem in the films by having the antagonists repeatedly bully, cheat or threaten Bugs in some way. Thus offended, Bugs would often drawl "Of course you realize, 'DIS means war!" (a line which Jones noted was taken from Groucho Marx) and the audience gives Bugs silent permission to inflict his havoc, having earned his right to retaliate and/or defend himself.