From the Ben Wa site:
There are several ways to remove the balls including: jump up and down, sneeze, cough, sit and bear down as if you’re having a bowel movement, insert lubricant to help them slide out, etc. If you think you might have a hard time removing the balls, then you may want to purchase balls that are strung onto a retrieval cord. In any case, it is not possible for the balls to disappear inside the body from the vagina.
(Source: benwaballs.net)




