Why is there a huge rush in Lulu Hypermarket after noon on Fridays?

Any idea on what is the reason for the huge rush during this time? Majority of people don't do office-jobs these days? Today, it took more than 25 minutes to clear the payment queue. Noticed that there are so many people who are buying at around 7K bill range.. contributing to the delay in clearing of queues. Also, they did't have the separate counters for "Less than 10 items".