Smarty pants and the automatic check-out

Ok I am such a clever claus that I decided to do all my main shopping and put it through the automatic check-out.  I took ages to do it because I thought it would be faster than going through the ordinary way.  Rosie took all her shopping through the check out and was finished before I even put my debit card in the machine to pay.  Oh well I guess it will be back to the check out girl for me.