I'm trying to sell a car and I'm no good at it.
I don't know what an alternator is and I don't care to know. If you put gas in it and it doesn't go, I have no clue whats wrong with it.
And whats worse is when people think a man ought to know these things. And why ought he to know them? I don't need to know how to fix a car to be a man. Sure, knowing how to fix it might be good if I broke down on the side of the road, but in that case, it would also be good for a woman to know as well.
I just hate people looking at me as if I am not a male because I could give a flip less about a car's innards. Working on a man-made hunk of metal on a hot day doesn't mean all that much to me.