In the checkout line again behind someone who has forgotten:
her wallet
a photo ID card
cash, check or credit card
an item to purchase
a coupon
her loyalty card
a note to self to not forget
to ask for cash back
forgotten

Ah, how simply the simplest things
turn complex.
Buying groceries is not brain surgery, of course.
If it were, the patient would be dead,

and once the mortician arrived
to collect the body,
the checkout line delayed
even longer.