Once I found em I fell in love w. em. Very realistic sensation.

Not long after they came out, I had a ATF that used it.... WRONG. A little finger expedition and there it was. Don't know how she managed to push it up there, but she did. Kinda used it in a diaphragm sort of way. Kinda reminded me of a story/urban legend of a woman who sued because the spermicidal jelly didn't prevent a pregnancy because she faithfully spread it over every piece of toast she ate. She confessed it tasted horrible though.
So, just to be thorough, if your gonna try it, part of it remains external. Just because you can fit it all up there, doesn't mean its supposed to. I feel dumb just for saying it.