what is forever?

Im trading my mother in for another one. One who is more technologically advanced. My mum has a mobile phone. She never uses it. I needed to talk to her today, to ask her a question. I couldn't, as she was not at home, and her mobile phone NEVER leaves the house. No matter how many times I ask her to use it, she won't. It really pisses me off. Sometimes I need to talk to her, and the only way to do that, sometimes, is via mobile phones. I hate her.