i hate the shitty bratty phase. my daughter didn't do it, but my son did. my daughter went through her know-it-all phase during her senior year during her culinary program. with my son, i stopped doing things for him when he got an attitude. "no, i'm not going to give you a ride to your friends house. you were a total asshole to me this morning, and you hurt my feelings. if you talked to somebody else like that, do you think they would drop everything and give you a ride?"
no, i'm not going to give you money to go to the skating rink. you gave me shit for an hour when i asked you to take out the trash. why should i give you money if you give me crap over such a simple thing?