My girlfriend simply calls my computer "broken".
One time my brother was in my study and I needed to shut down my computer. After bashing on the keyboard for ten seconds or so he commented "THAT is how you shut down your computer?!" It honestly hadn't even occurred to me it might seem weird from the outside.
I wouldn't have it any other way, though. Sure it's nice if a machine "just works", but machines don't just work. They are layers upon layers of complexity and if I have to understand them then I might as well interact with those layers directly.