Keep in mind, when you refuse, you are allowed to be nice about it. Blame it on lawyers. Blame it on Mom or Dad. Blame it on advice from the Law Office of Adam D. Brown, specifically–many law enforcement officers know him personally. YOU HAVE CONSTITUTIONAL RIGHTS. USE THEM!
Refuse to talk.
Refuse to allow them to search your car.
Refuse to allow them to search your bag or purse.
Refuse Field Sobriety Tests.
Refuse Implied Consent.
Refuse State Breath Tests.
Refuse State Blood Tests.
Refuse everything.