Recently I was at one of my Ask the Expert Parties (think Tupperware for parenting) where I start by asking the small group of parents assembled what their biggest parenting challenge is in that moment. A dad sitting next to me, said that his biggest challenge with his 15 year old daughter was that one minute she was loving, sweet, conversant, but then the next second when he had to set a limit about something, or reprimand her for something she turns into "Atilla the hun"(my words not his) All ten parents nodded their heads in agreement, and as we went around the circle this issue emerged as the most prominent one. For some parents it makes setting limits so hard, because they know that the aftermath will be horrendous with yelling, screaming, slammed doors, and shouts of "you are the worst parent ever." And at that moment that is just how parents feel.
OK give yourselves a break here. To expect that after you have said NO to one of your teen's impulsive, emotional, can I's, that your teen will look with love in their eyes and say: thanks mom and dad, that was a really smart parenting call, thank you so much for keeping me safe is completely and utterly ridiculous. And I know you know that. But in that moment when you said your No means NO, you would just like once for your teen not to explode in your face. And unfortunately, most parents when put on the defensive for their parenting decision will fall back on the : Well if you don't like it, go live with another family defense.
Here is something you can do instead. Next time you say NO to something because it is unsafe or unreasonable, instead of getting defensive when your teen strikes back you can use an "I get it" statement. In a calm and supportive voice you can say: " Hey honey, I get that wasn't the answer you were looking for, and I know you're disappointed, and are really pissed at me. I know it's hard to watch your friends be able to do something that we don't think is safe, and it feels really unfair. But you know we love you, and though it feels smothering sometime our first priority is to keep you safe."
And then, that's it. Don't go on and on like a broken record, don't try to re-explain for the billionth time why you said no. Honestly they don't care, they stopped listening at NO. At least using the above strategy you don't make a hard situation harder, with the potential of all parties getting way out of control. You are not in any way apologizing for your decision, but your are understanding how this decision affects them. Understanding is so much better than being right or being angry.