Ha! Good one. I'll give it to Bugs Bunny. The only way Hulk could beat him is if he put on a blonde bunny wig and acted like a girl. Then bugs would go ga-ga and try to charm the Hulk. Then Hulk could hit Bugs, though it would be unlikely.
The more likely result would be that Bugs would probably notice the Hulk's ripped purple pants coming from beneath the dress and would give Hulk a big wet kiss, say "What's up, Doc?" and run away.
Bugs wins, too much chutzpah, and Hulk is too dumb to think of the disguise.