What if a One Bar Prison could move up and down? I just had to try it! Combining the One Bar Prison with a Fucking Machine makes a very fun challenge for new girl Nina Grace. She is standing in extreme Pleaser Domina heels, so she can’t lift herself up, she is already on her toes. The dildo can move freely inside her, up and down, but it is still holding Nina in place. This turned out to be a…