I was in Asda yesterday morning buying a single loaf of bread, and at the Self Scan tills, there was a family of 3 spreading themselves and their full trolley right across the entrance bit to all 6 tills, while they discussed the legality of using the Express Lane to pay for enough food to feed the entire nation of China.
The wee Asda employee turned up, and with all the authority of the toenail on the 4th toe of my left foot, issued the command "It's 20 items or less" several times, until the "Father" of the family turned round, and she bellowed "Oh, you're probably confident with the system" and scuttled away, off to suckle at the teat of the Wal-Mart corporation, no doubt.
I should stay away from Asda.