Not my mom, but my girlfriends grandmother. I told her that I am a software developer, a guy who makes the programs which run on computers.

She became really excited about that, because finally she found someone to repair her 40-year-old radio. I told her that I have no fucking idea about radios, but she did not want to hear that. So I looked at the case, randomly pushed some buttons and again told her, that I could not find the broken part, let alone repair it. But she didn't listen and told me to open the case and look inside.

Sighingly I opened the radio, looked at the inner parts and told her once more, that I don't know anything about this stuff. She told me to look more closely. About to lose my mind about this pointless task, I finally told her, that "the transistor" is the problem and that the best thing she could do is to throw it away and buy a new radio. She was happy with that answer.