Bella vs Arbitrary Torment

It all started with a simple idea: Strap Bella tightly to a chair with a magic wand and watch her cum endlessly. The problem is, we don't do simple here, we have to make it interesting. A random timer on her wand would do the trick. Bella can only watch nervously as the timer is set to turn on up to 90 seconds and off up to 60. As soon as the switch is turned on, one thing is clear - this is far more entertaining.