Assless chaps work too.
Like I had said before, I was 12 or 13, lost it with my friend when she and I basically had the entire day alone together. We tried out everything we could think of until the following morning, though only a couple things were actually fun when you're learning everything as you go along. Was awkward between the first two times, and the second and third, but wasn't so bad after that.
Kinda sucks that I had a better sex life all the way through high school than I did during my 20's.