Nakedism
When a group of people strip down and act like they are at a beach party, but it's 2 a. m. and they are in a parking lot.
Three of my friends went Nakedism at the mall. The security guard yelled at them like they were stealing candy.
My cousin did Nakedism with her friends in the park. A dog ran up and licked her leg.
My brother and his friends did Nakedism on the school roof. The principal saw them and had a heart attack.