Trivia: Julian was played by twins Cole and Dylan. You can tell which twin is in a scene as Cole has a mole on his left cheek which is paticularly visible in close up.
Trivia: There is some kind of obsession with feet in this film. Corrine is a foot doctor. Sonny tells Julian that he smells like a foot and Julian's teacher's name is Mrs. Foote.
Trivia: In the court scene at the end of the movie, the opposing lawyer is Steven Brill, director of Little Nicky and Mr Deeds, other Adam Sandler films. Plus the guy who Sandler "trick or treats" is Dennis Dougan, director of Happy Gilmore, another Sandler film.
Trivia: The waitress who gets Julian a root beer in the bar is Adam Sandler's wife, Jackie.
Answer: Maybe I'm misinterpreting the line, but I thought "big problem" in this context meant that the state would aggressively pursue criminal charges against Sonny for his actions, as in it's his big problem to deal with now.
Phaneron ★
But in that context, wouldn't it be a "big" / serious problem in any state? I can't imagine that most states would be easy-going about it. He seems to mean that it happens a lot in New York, but I might be wrong.
Other states would certainly be aggressive in that situation, but given that Mr. Brooks is an employee of the state of New York, he could just be emphasizing how much trouble Sonny is in.
Phaneron ★
Fair enough. Sonny might have thought that it was OK for him to pretend to be Kevin, since he is good friends with the real Kevin.
Mr. Brooks was being facetious by specifically saying "big problem in THIS STATE." Obviously Sonny knows what he did was very wrong and illegal. It would be like if you were driving in a different state and didn't stop at a stop sign. The cop might say "I know in your home state the stop signs are optional but here in Texas you're required to stop at the sign."