When I was 15 the cool thing to do was sneak a joy ride in the family car. You drift out of the driveway and start the car rolling down hill. The Watergate hearings were a perfect time as so many parents were glued to the TV. Surprisingly none of my friends ever got caught, me either, and we did this a lot.
If you came home with a date....he cut the engine B4 he pulled into the driveway...so as not to wake your parents....so you could ......erm....ahem.