No, it is not okay to call people on no caller ID and say nothing, then keep calling when they hang up. This behavior is commonly known as "prank calling" or "harassing calls," and it is considered inappropriate, disrespectful, and potentially harmful.
Prank calling can be distressing and intrusive to the person receiving the calls, causing unnecessary anxiety, fear, and frustration. It violates the person's right to privacy and creates an uncomfortable or unsafe environment for them.
Engaging in such activities can have serious consequences, as it may be considered harassment or even illegal in some jurisdictions. In many places, there are laws and regulations that prohibit making unwanted, repeated, or harassing phone calls to others.
Instead of engaging in harmful pranks, it's essential to treat others with respect and empathy. If you want to have fun with friends, consider harmless and consensual activities that don't involve causing distress or discomfort to others. Remember that kindness and consideration for others are essential aspects of being a responsible and respectful individual.