Dear teenagers;
Stop expecting everything for nothing.
Do you want good grades? Do your homework, study hard, put in the extra effort, and chances are, your grades will improve.
Do you want nice things? Earn them! Don't tell your parents what you want...get a job, save your money, buy them yourselves.
Do you want your parents to loan you the car, pay for the insurance, cover your fees for sports, or music lessons, or whatever your "thing" is? Try giving a little to get a little: do your chores, then do more...cut the grass, wash the floors, cook dinner, take the recycling out, walk the dog, wash the car(s)....
Our jobs as parents are to feed you, clothe you, house you, and do our best to teach you how to be a responsible, productive member of society. None of us are obligated to do much more than that, so maybe you teenagers should realize that all those extras you get from your parents (the cell phones, the brand names clothes, the lap tops, the sports, the music lessons, the car insurance, the school field trips...) are things they worked hard to earn the money for, and the least you could do to thank them is to work hard yourself. Work hard at school. Get a job to earn your own money. Help out around the house every day.