We do trust you without question. We don't trust your friends until they prove worthy of that trust.
If our antennae wobble when we meet the parents or siblings of your friends, you will not be allowed to sleep over. Don't keep asking us because the answer will never change. Not in our lifetime. Never.
Sultanas are untrustworthy and will appear to spoil a perfectly good sweetie.
If milk or food tastes off or funny on the first bite, don't take another to be certain. You will regret it when you are vomiting at 2am the next morning.
Yes, parents like to watch the news (see financial decision-making lesson).
If you take the memory card out of the camera, put it back before the next major family event. Internal memory on cameras cannot cope with a wedding or christening.