I am left handed. I hold the snake in my right hand. I turn it over. I put my right thumb up against the top of the cloaca and using my other thumb I start in the middle of the area between the cloaca and the tip of the tail and roll my thumb up towards the cloaca. If you are right handed and feel more comfortable you can hold the snake in your left hand and do it the opposite way. The penes retract down into the end of the tail. By starting a little further down and rolling up towards the cloaca you can get them to evert the penes (if they are males). Otherwise it will just be a light pink with no penes.