It was a great end of the work day. My colleague and I had just completed what seemed to be an everlasting day of correcting examination scripts.  Thereafter, we  welcomed the opportunity to go to the supermarket to purchase a few items. Going through the aisles was most therapeutic. We collected our items and headed to the counter to pay. There were no long lines to overcome. Who would not welcome icing on a cake? Icing that is well made makes the cake most pleasing to the eyes.  Well, we were in for our icing on the cake when we learned that we could obtain a free shopping bag while we were there. The news launched us into a fit of trying to meet the conditions to qualify for a bag. Anything legal for that bag. Buy more items? Combine our items? Ask the customer ahead for one of his bags? Negotiate with the cashier? We resorted to negotiating with the cashier. However, if we landed one bag how would we share it?  When the customer ahead had cashed his items...