More debit madness

I know that every debit machine is different. Some like the magnetic stripe facing left and some like it facing right. So it doesn't faze me at all when people insert their cards backwards into the debit machine at my register. If I seem them starting to so that, then I just say "It goes the other way." And when I say that, most of the time the customer will remove their card, give it a 180 degree turn and insert it correctly. That's most of the time. But at least once a month I get some genius who will remove the card and turn it 360 degrees so that it's still facing the same wrong direction! What the f*ck is wrong with you?