Man, do not piss off Hilary or Haylie Duff. Especially if you’re a photographer and they’re leaving their parents’ divorce hearing–cause Haylie will throw down.

So the sisters were leaving court today, and a photographer decided to follow them and kept trying to nudge his way passed their bodyguard and general being obnoxious. The pap even has the balls to say “I can’t believe the way you’re acting,” to which Haylie replied “I can’t believe your job.” At one point, she calls him a “pathetic loser,” and the only thing that would’ve made it sweeter is if she added fu&%ing in the middle. I don’t care if your image is squeaky clean–some situations beg for the F-bomb.

Luckily, TMZ was there and stood back and got the whole thing on tape. You’ve gotta love them–they always let someone else make the ass of themselves and then reap the rewards.