[YOUTUBE]http://www.youtube.com/watch?v=yqMjMPlXzdA[/YOUTUBE]
its long, but may very well save your butt one day.
in a nutshell, the only things to say are:
1. I want to see a lawyer.
***2. I do not consent to a search.***
Gotta love the ACLU and how on that tape everyone was, in fact, guilty of a crime. I agree with the notion of lawyering up and staying silent; the goals of police officers are to arrest people who have committed crimes, not "make it easier on you" if you 'fess up, so that's never in your interest. The only opening your car window a tiny bit will never be acceptable and it will make the police suspicious if you try -- a very bad idea IMHO. As for not consenting to a search, you should know that the rules are very different for a car, a bag and a house. Honestly if you don't allow police to search your car or bag but your actions or statements make them reasonably suspicious, they will either get a warrant (based on your words or actions), bring out a canine unit to sniff around you, the bag and/or the car (to give them enough reasonable suspicion for a search or warrant to actually look inside) or simply bring you downtown based on whatever traffic violation you committed, and do an inventory search of the car or bag there. The example where the officer is suspicious but just lets the kids drive off with a speeding ticket is somewhat bogus -- if the policeman had good reason to actually think they had something in the car (which seemed to be the case based on his squirrelly actions on this tape), he should have been able to come up with some articulable reason to detain the kids. If he didn't think something was up, he would have never made them get out of the car. [In the scenario where the kid had paint on his hands and lied to the police as to where he was going, he probably gave them plenty of reasonable suspicion to detain him, bring him downtown and find the paint.]
So the only really good defense when you get arrested in public is to not have drugs on you. Always the wisest approach. The next best thing is to stay silent and lawyer up. The odds of helping yourself by coming clean to the officer are non-existent. Not consenting to a requested search comes in a distant third and is often fruitless -- if they really think you have drugs, the police have too many other tools in their arsenal that they can use without violating your rights.
The situation with the woman bringing the cops upstairs to hand them the bag of pot was pretty laughable. Warrants to search a residence tend to be harder to come by and so your odds of getting arrested in your own home without an independent reason for the police to come inside (eg someone inside is ill/OD'd, the police are serving a warrant on a guest, they see someone committing a crime through the door/window), are pretty nominal. So yeah, in that case you come outside and don't invite the police in, and you are home free.
. i think it would be a bit better though if you used more paragraphs 
