That's another thing that winds me up. Whenever I visit anyone, it'll always include the line 'While you're here, can you take a look at this...'
'This' can be anything electric with buttons or a screen, which apparently makes it a bit like a computer, so therefore I must know how to work it, fix it or teach them how to use it.
Yeah I've had that, the surround sound system wasn't working properly last time! I'd have no more of an idea than him except we worked through it logically, are the wires all connected correctly, are they shorting etc.. I don't think we fixed that one, but he's never got me with a PC problem, I've always fixed those.