piercing and chastity

Has anyone ever seen or heard of using piercings?
Specifically she is wondering if a piercing in end or penis and another in scrotum where penis lays when flaccid....put rings inboth and then locking with a very small padlock......? easy, but would it work?

 

more questions

1. pict is great, assume it is from the underside..

2. other poster said skin migrate, does anyone have observation on this,


3. Riki said getting hard is not an issue.....my question is why not? seems to me that getting hard would cause a great deal of strain. Also just plain pain as piercing wouldn't allow for it.
4. What about at night, if i get an erection? Can asume will wake up fast as it starts to pull and hurt.