Tweezers can come in handy when you are having difficulties to get out something, especially from your skin. Typically, cysts grow on face, neck, upper back, chest, but the chance of it developing on the back is not excluded. In the case of this woman, the cyst appeared on her leg which is an unusual thing.
She was grossed of the way it looked on her leg, so she tried to get it out with a pair of tweezers. This parasitic black spot was not easy to remove, so she struggled to grab the cyst in order to get it out of her leg. Although in looked like a simple black material embedded in her leg, it was much more below than the first skin layer.
So, after her multiple efforts, she succeeded to remove the odd creation, leaving a small deep hole behind.