It does not seem like an intrusive thought. Intrusive thoughts are thoughts that enter your mind against your will. They can be very distressing. You willed the thought of harming your mother into your mind. That is the opposite of an intrusive thought.
The urges you wrote about and the energy behind them could be excitement or nervousness. They could also be related to curiosity but not a desire for infamy or a psychosis.
It is difficult to answer your question about whether or not these are normal thoughts. You are free to think anything you want and your thoughts could have occurred in response to a movie you were watching.
It is not healthy to want to harm your mother. Those thoughts can be distressing especially if they are frequent and lead a person to consider acting on them. At that point, it’s best to consult a mental health professional to prevent them from worsening. Please take care.
Dr. Kristina Randle