About 10 years ago, one of my favorite Walmart checkers was a high school girl named Desiree who was sweet and petite who always wore her long brunette hair in a pony tail, about 5' 2" and Desiree couldn't have been more than 95 pounds. One day, I was in Desiree's checkout line and in front of me was a man and his wife checking out and the man was a big strong guy and this couple had a 50 pound sack of dog food on the bottom of their cart, and instead of this man helping little Desiree with this heavy sack, he just stood there, watching Desiree come around and reach down to lift this bag up to the counter top where she could scan the code label, and then Desiree struggled to lug the heavy bag back down and place it back under the shopping cart.
After this couple finished checking out and had pushed their cart until they got out of earshot, I told Desiree that I was pretty upset at that guy for not helping her with that heavy sack. In her usual cheerful voice, Desiree told me, "Oh, it's okay. That's just part of my job." As I was signing the credit card machine to pay for my purchase, I told Desiree, "Well, I'm still pretty mad at that guy for not helping you."
And then in her meek little voice, Desiree told me, "You could have said something to him."
I burst out laughing very hard and then I told Desiree, "He would have turned me into a grease spot," leading both of us to laugh.