Secret Admirer - Smartphone Dare
(California, United States)
Part 1 - grab someones phone (secretly, and can be of opposite sex) and take nude pics of yourself (with no identifying face shots) and return the phone without them noticing. wait for it...they will notice soon enough.
Part 2 - if they dont see the new image before the person leaves; you must bring up somehow that they now have new images on their phone without them knowing you took them. (ex: send them a cool image or something via text to make them save and look at the phones images)