my butt can take a wollup...sometimes. The "bigboy" is not made properly to stay in place as it should. I'm considering purchasing the cheeky boy instead.
I feel the same way I was dripping pre cum and fighting the last ball in. I got them all in with a lot of work. What helped was sitting on an exercise ball and using it to push the toy into my ass. When I finally got it in all the way in it popped out. A little more area between the last ball and bullet arm would be nice.