Handy tip: if your six year old is prone to wetting herself without notifying you, don't put her in the basket seat. I don't care if she fits, just don't do it.
If you don't follow that tip and she does wet herself, don't make the cashier handle the urine soaked items when you can hold up the barcodes and she can scan them across the counter.
Also don't fail to notify an employee if your child leaves a puddle of human waste on the floor.
And especially don't start grade sorting the items and deciding not to buy things that were in the cart your kid pissed all over.
Seriously, people are disgusting. There's a stiff drink in my future in about an hour and a half.