Our supermarket has flexible plastic strips that slide out sideways and across the end of a closed checkout aisle. The word "closed" is clearly stamped in large black letters across the face of the strip, on both sides of it.
I was standing in line at an adjacent register and happened to notice two young women coming up the closed aisle toward the store's interior. The first one skipped a little sideways and slipped through the opening at the end of the strip. The second one, who was texting, walked right into the strip, bent it into a right angle, and almost fell over it. Truly slapstick.
But, Lord help us if she ever gets behind the wheel.