Inside the Costco Thunderdome: Cart Tunnel Vision and the Mad Max of Retail

Key facts

• Shelby Blessie, a 34-year-old teacher from Kansas City, Missouri, stands 4 feet 11 inches tall and often cannot see over her cart.
• Neil Saunders, managing director of GlobalData Retail, describes Costco as a 'very hectic store' with 'frenetic energy.'
• The term 'meanderthals' was coined on Reddit for shoppers who wander unpredictably.
• 'Bumper carts' are so common that employees joke Costco lubricates wheels with 'ankle skin.'
• Shoppers often stop abruptly for items like BBQ Chicken Mac and Cheese with Bacon or a 25-pound bag of rice.
• Sample stations create logjams as shoppers crowd four or five deep.
• Costco's shopping carts are extra-large, contributing to spatial awareness issues.

The Lede: A Thunderdome on Wheels

At 4 feet 11 inches tall, Shelby Blessie cranes her neck to see over the oversized shopping cart as she navigates the chaotic aisles of Costco. The 34-year-old teacher from Kansas City, Missouri, has been run into and tripped over by shoppers who simply did not see her. 'I have had people who didn’t see me run right into me or trip over me,' she said. Blessie admits she has also accidentally rammed others, but she insists the fault often lies with those who stop abruptly without warning. 'You have got somebody behind you who is going the same pace as you and then you stop to look at the gigantic water slide,' she explained. 'I want to see it, too, but I am going to pull over to look at it.'

The Phenomenon of Cart Tunnel Vision

The internet has dubbed the condition afflicting some Costco shoppers 'cart tunnel vision' — a loss of situational and spatial awareness that turns the warehouse into a retail battlefield. On Reddit, one user coined the term 'meanderthals' for those who drift unpredictably, blocking aisles and forcing others to squeeze around them. These shoppers often cruise four or five abreast, barrel down the wrong side of aisles lined with high pallets, and double-park or abandon their carts in the middle of traffic. The resulting logjams are a frequent source of frustration, especially around sample stations where crowds gather four or five deep.

The Design Behind the Chaos

The Costco shopping experience is immersive by design, from the big-screen displays at the entrance to aisles packed with tempting deals. Even a quick trip for toilet paper and milk can lead to sensory overload, as shoppers get distracted by sales on sheets or other unexpected finds. Neil Saunders, managing director of GlobalData Retail, describes the atmosphere as having a 'frenetic energy' that influences shopping behavior. 'Costco is a very hectic store. Part of this is because it is so popular. Part of it is because it’s a store where people shop quite intensely – exploring different categories, buying in bulk and stopping to sample things,' Saunders said. He compared the scene to 'Mad Max' but with shopping carts.

Bumper Carts and Minor Collisions

The distracted habits of shoppers frequently lead to minor collisions, known as 'bumper carts.' These run-ins are so common that warehouse employees joke that Costco lubricates the shopping cart wheels with 'ankle skin.' The oversized carts, which are extra-large like everything at the store, exacerbate the problem by limiting visibility and maneuverability. Blessie, who has been both victim and perpetrator, noted that many shoppers fail to pull over when they want to examine a product. Instead, they stop abruptly in the middle of the aisle, causing a chain reaction of near-misses and bumps.

The Social Dynamics of the Aisles

The behavior of 'meanderthals' — shoppers who seem oblivious to their surroundings — has become a recurring topic in online Costco forums. Complaints range from people walking four abreast to those who leave carts blocking the flow of traffic. The frustration is compounded by the store's popularity and the intense, deal-focused mindset of many customers. Saunders noted that the frenetic energy inside the warehouses influences how people shop, driving them to explore categories and stop for samples without regard for the flow of traffic. This creates a self-reinforcing cycle of congestion and irritation.

What Comes Next: Navigating the Thunderdome

For shoppers like Blessie, the key to surviving a Costco trip is vigilance and patience. She advises pulling over to look at items and being aware of one's surroundings. However, the store's design and the behavior of other shoppers make this easier said than done. As Costco continues to expand its footprint and attract crowds, the phenomenon of cart tunnel vision is unlikely to disappear. The warehouse giant shows no signs of changing its layout or cart size, meaning the thunderdome will persist. For now, shoppers must learn to navigate the chaos — or risk becoming a meanderthal themselves.

The bottom line

• Costco's immersive design and oversized carts contribute to a chaotic shopping environment.
• Shoppers often experience 'cart tunnel vision,' losing spatial awareness and causing collisions.
• The term 'meanderthals' describes those who wander unpredictably, blocking aisles and frustrating others.
• Sample stations are major congestion points, with crowds four or five deep.
• Minor collisions, or 'bumper carts,' are so common they are a running joke among employees.
• The frenetic energy and popularity of Costco are key factors in the store's hectic atmosphere.