When I was 15 and a sophomore in HS, I went to a party with a few friends from my baseball team. There were four of us. Me, two juniors and a senior. The senior drove. All three of them got hammered, and I didn't drink at all. Not a drop. We left around midnight, and I realized that all three of the licensed drivers were too drunk to get behind the wheel. So, being a responsible young man with a learner's permit, I deduced that, as long as the 18 year old was in the passenger seat, and I was driving, I wasn't breaking any laws. Which was kind of true, I suppose.
About half way through the 30 min drive back to my buddy's house, the senior buddy of mine had to piss. He said he couldn't make it to the convenience store let alone all the way home. So, I turned into a brand new neighborhood that was under construction. He piled out, walked about 20 yards and took a piss. Ten seconds later, red and blue lights are flashing in my rearview mirror. Fuck. Cop shines his spotlight on the car then on my buddy.
Cop: "Son, what are you doing?"
Buddy: "I'm taking a piss, Officer."
Cop: "Why aren't you using the restroom?"
Buddy: "Sorry, Officer. I couldn't make it to the store."
Cop: "But why aren't you using the restroom?"
Buddy: "Excuse me. I guess I don't understand..."
Cop <shifts his spotlight to the portable toilet 10 feet to the right>: "Son, you're pissing right next to a port-a-potty. Why didn't you piss in there instead of pissing on the ground?"
He asked us all a few questions and asked for my ID. I gave him my learner's permit and told him the story. He never doubted it for a minute. He actually thanked me but said next time someone should call a parent to pick us up. I told him where we were headed, and he let us go on about our way home.