Naked in empty school
 

I ran through my school completely naked one summer while no one was there. Had a key to get in since I was assigned to take care of several animals the science class had. After I took care of the animals, I stripped my clothes off in the empty classroom, went out into the long, empty halls, ran from one side of the building and back completely naked while my mom waited outside in the parking lot. Was worried she could come in at any time, but never did.

One of the most thrilling experiences of my life. Always wanted to repeat the experience, but never been able to find another empty building to do it again.