/jp/ - Otaku Culture

There were some talks about this one in a previous thread and I just recently got it.
I had way higher expectations for the ball gimmick, maybe I just use too much lube but I can barely notice that I am poking them (it's not hard enough or rugged enough maybe?) so what I did was put 2 balls at the same time which I felt a bit more but they start wobbling around and it's almost like they are gonna pop out of the hole through the sides.
I did also try it without any balls and because the end chamber is huge it actually provides a really good vacuum even if a bit wobbly.