If you have an Apple Watch, it’s easy. Open up a naked pic in photos (this one is a close up of my wife with her legs wide open and lips wet and throbbing). Press the download (bottom left) and scroll down to “set as Apple Watch face”. Select Kaleidoscope and add. It’s fun to show someone the time without realising that they are actually looking at the throbbing fanny of someone they know just waiting to be fucked.