To make a law members of parliament (MP's)  vote to say whether “Bills “ (draft laws) should become laws that apply to everyone in New Zealand. A bill may have several “readings “ in Parliament. At a reading MP’s argue about the bill and make suggestions about things in the bill that they might want to change. 

Once a bill has been voted on and approved by most of the members of parliament it is called a Statute, Act of Parliament or Legislation. A statute is a booklet which sets out the law in writing. It always has a title which describes what it's about, and describes the year it happened e.g. The Human Rights Act 1993 or the Children, Young Persons and their Families Act 1989. A statute can range in size from one page to hundreds of pages.

Parliament can vote to make changes to a law (sometimes called an amendment) or to cancel a law (repeal it). If enough people let the Government know that they are unhappy with a law, they will often amend or repeal it, so that their political party does not lose votes at the next election.

Some funny laws from America are : (and they are real laws!) :

In Mesquite, Texas it is illegal for kids to have unusual haircuts (like mowhawks or weird dye colourings)

It is illegal to milk another person's cow.

In Utah,  it is illegal to fish while riding a horse.

In Blythe, California, you're not allowed to wear cowboy boots unless you own at least two cows!