This is harder than it looks

So I'm at work yesterday, bagging groceries just like I do every day, and my supervisor comes over and starts criticizing how I bag the groceries. Customer after customer, he's got a comment.

Finally, I said, I'd like to see you do better!

Then he pushes me out of the way and starts bagging groceries: He puts frozen foods with other frozen foods, cans with other cans, bottles of cleaning products in a separate bag, doesn't overfill bags, and places fragile items like bread and eggs on top. In short, a much better bagging job than I was doing.

I guess he showed me.