Quote Originally Posted by Eric Alan View Post
Sexing can be done by either the probing or the popping method. A lot of breeders prefer the popping method because you can actually see the hemipenes if it's a male (no penes = female, obviously). I wouldn't suggest attempting either of these methods by yourself for the first time - find a breeder in your area that can help you out.
Pretty much sums it up. And I would add that it probably isn't recommended to pop adults.