Quote Originally Posted by Ozme52
Great little fantasy.

Never introduce air. Pressurized orally, it will be loaded with germs that would infuse into the tissues if the balloon breaks. Pressurized mechanically, you risk introducing machine oil...
I know, but thx anyway

I wouldn't use air to fill the balloon as I want to make her feel the movement of the water by everything she does..., and indeed the texture of the standard balloons might be too rough to insert... but on the other hand, those balloons can really extend real far